The filmmakers were given access to original transcripts of intercepted cell (mobile) calls between the ten terrorists and their handlers.
A significant amount of actual dialogue in the film was repeated verbatim being taken from original transcripts of actual intercepted mobile (cell) phone calls during the 2008 siege.
A video confession from the post Mumbai 2008 terrorist siege trial of the only surviving gunman was made available to the production.
At the end of "Slumdog Millionaire", Dev Patel danced on a particular train platform that was shot on location. in Mumbai A month after "Slumdog Millioniare" was in theaters, Dev Patel (who grew up in the UK) came home and saw a terrorist attack on that same platform. When scripts were circulated telling the story of the attack, he knew he wanted to be a part of it.
The film features the following spoken languages: English, Hindi, Urdu, Punjabi, Russian, Persian, Greek, Marathi, and Arabic.
This film is "based on hundreds of hours of interviews with survivors and witnesses" according to 'The Conversation'.
One of a number of dramatic film dramatizations about or based on or inspired by the 2008 Mumbai terrorist attacks. The films are [in order of release]: 'Surviving Mumbai' (2009) (aka the "Mumbai Massacre" episode of the "Secrets of the Dead" television series in the USA); the short film 'Embrace' (2012); the Hindi film 'Shahid' (2012); the Bollywood movie 'The Attacks of 26/11' (2013): the French feature film 'Taj Mahal' (2015); 'One Less God' (2017) (aka 'The Mumbai Siege' / 'The Mumbai Siege: 4 Days Of Terror'); and 'Hotel Mumbai' (2018).
A memorial monument in 2010 was erected in the lobby at the Taj Palace Hotel to commemorate the victims and fatalities from the 2008 siege.
One of two 2017/2018 theatrical feature films based on the 2008 Mumbai terrorist attacks which were both first released around the time of their 10th Anniversary. The films are 'Hotel Mumbai' (2018) and 'One Less God' (2017) (aka 'The Mumbai Siege' / 'The Mumbai Siege: 4 Days Of Terror').
When director Anthony Maras lost his thumb moving a fan at a crew party, Dev Patel recommended a doctor who happened to be the father of the child actor who played a younger version of him in "Slumdog Millionaire"
The film is based on a true story. In November 2008, ten Pakistani members of Lashkar-e-Taiba, an Islamic militant organization, carried out a series of twelve coordinated shooting and bombing attacks lasting four days across Mumbai in India. The attacks, which drew widespread global condemnation, began on Wednesday 26th November and lasted until Saturday 29th November, killing 164 people and wounding at least 308. Eight of the attacks occurred in South Mumbai: at Chhatrapati Shivaji Terminus, the Trident Oberoi Hotel, the Taj Mahal Palace & Tower Hotel, the Leopold Cafe, the Cama Hospital, the Nariman House Jewish community center, the Metro Cinema, St. Xavier's College, and in a lane behind 'The Times of India' building.
The film features actual television footage of the siege as did the earlier 2009 Emmy-nominated documentary feature film 'Surviving Mumbai' (aka the "Mumbai Massacre" episode of the "Secrets of the Dead" television series in the USA).
Despite the movie's singular 'Hotel Mumbai' title, the 2008 Mumbai terrorists attacks actually involved two hotels, the Trident Oberoi Hotel and the Taj Mahal Palace Hotel.
David Coleman Headley, who was an American terrorist of Pakistani descent, is not mentioned in the movie. Director Anthony Maras has said that the film is told through the perspective of guests and staff as the attacks are unfolding, when details as to its planning were not known. The film's end text specifically mentions the role of Pakistan.
About at least thirty cast and crew worked on both this movie and 'Lion' (2016) which both star actor Dev Patel and are both Indian-Australian productions relating to India. Of these, working on both pictures has included actor Sachin Joab, composer Volker Bertelmann, and India line producer Pravesh Sahni.
The film's first release dates have been scheduled for late 2018 in November so as to coincide with the 10th Anniversary year of the Taj Palace Hotel terrorist attacks of November 2018.
Publicity for this picture states that this film "is inspired by the devastating attacks on Mumbai in 2008. It's a story about ordinary people binding together in a gruelling fight for survival. A story that celebrates humanity's highest ideals - compassion, courage, resilience and an unwavering desire to live".
As reported by the 'South China Morning Post' in a 11th September 2018 article, "Dev Patel had just finished acting in his first feature film 'Slumdog Millionaire'  when the violence in Mumbai [in November 2008] was splashed live across television news channels around the world"
The film premiered at the Toronto International Film Festival (TIFF) in Canada on 7th September 2018 and received a standing ovation.
The Taj Palace Hotel, after the 2008 terrorist attacks, was completely restored by 2010.
The film has been partly filmed at Adelaide Studios which was transformed to become the interiors of Mumbai's Taj Mahal Hotel which is the exclusive high class hotel in Mumbai. Filming then moved to India after the monsoon period.
Actor Anupam Kher, who portrays the character of Hemant Oberoi, reportedly was moved "close to tears" when he first saw the film at the Toronto International Film Festival world premiere on 7th October 2018.
The name of the real life radical group that conducted the terrorist attacks in Mumbai in 2008 is the Lashkar-e-Taiba (LeT). According to Zoom Digital's 'Times Now News', they "were instructed by handlers in Pakistan, who are believed to have undertaken the operation in close association with the Inter-Services Intelligence (ISI)." The film's end text specifically mentions the involvement of Pakistan.
Actress Teresa Palmer was originally cast in the film but withdrew due to her pregnancy.
The South Australian Government boosted the funds to the South Australian Film Corporation by $1 million Australian dollars in order to attract the picture 'Hotel Mumbai' and other feature films to the central southern Australian state.
Writer-executive producer-director Anthony Maras told show-business trade paper 'Variety' that the tip of his thumb got cut off in an accident when it got caught in an oscillating fan during filming.
The Weinstein Company originally picked up the distribution rights to Dev Patel next India-Australia feature co-productionHotel Mumbai (2018) because producer Harvey Weinstein appreciated working with Patel on 'Lion' (2016). The rights were later lost as an outcome of the Weinstein Company bankruptcy.
The second Indian - Australian film international co-production for actor and star Dev Patel in a few short years. The first was Lion (2016). Both films relate to India.
The film includes "excerpts of interviews by the filmmaker of the survivors" of the 2008 Mumbai terrorist attacks according to the South China Morning Post.
According to Gary Hamilton, the many Indian-Canadians in Toronto helped with the decision to premiere the film at the Toronto International Film Festival (TIFF) in Toronto.
"Securing 'Hotel Mumbai' underscores the importance of the State government's ongoing investment in the SAFC [South Australian Film Corporation] and the state-of-the art Adelaide Studios", said South Australian Arts Minister Jack Snelling. "This major production will create hundreds of employment opportunities as well as significantly boosting the State's filmmaking reputation, capacity and capabilities". Minister Snelling said 2016 was shaping up to be a very exciting year for the South Australian screen industry.
Actress Tilda Cobham-Hervey replaced actress Teresa Palmer as Sally when the latter became pregnant. Both actresses are from Adelaide, South Australia.
Screen Australia and the South Australian Film Corporation have supported the production, which injected millions into the South Australian economy, and employed a large local crew during the five week shoot based at the Adelaide Studios. The production team included over 350 South Australian cast, crew, extras, background artists, and heads of departments.
The film is premiering in 2018 which is exactly a decade (or ten years) after the 2008 terrorist attack on the Taj Mahal Palace Hotel.
Director Anthony Maras and cinematographer Nick Remy Matthews previously had collaborated on 'Azadi' (2005), 'Spike Up' (2007), and 'The Palace' (2011).
Indian Dev Patel, who portrays Arjun, has poignantly described the film as an "anthem of resistance", and this has been well reported in the media, and was mentioned as part of the film's introduction at the September launch of the 2018 Adelaide Film Festival program, where the picture Australian premieres as the fest's Opening Night Film on 10th October 2018.
Leading South Australian filmmakers and Hollywood superstars came together in Adelaide to create this major international production, 'Hotel Mumbai', with filming starting on 2nd August 2016 and wrapping five weeks later in early September 2016.
Director Anthony Maras has said of this film: "I am forever grateful for the unwavering support the Adelaide Film Festival has offered our project since day one. The SAFC [South Australian Film Corporation] and ADL [Adelaide] Film Fest [AFF]'s backing of 'Hotel Mumbai' enabled my home town of Adelaide to play a crucial role in the making of this truly international production, and allowed us to work again with so many amazing South Australian cast and crew. It could not be more fitting to premiere the film at AFF, and so soon after the World Premiere at the Toronto international Film Festival."
The picture is "the first major Hollywood film based on the 26/11 Mumbai attacks" according to Zoom TV Digital's Times Now News.
Pre-production on 'Hotel Mumbai' started in June 2016, with filming commencing in early August 2016 and wrapping in early September 2016. Post-production was initially scheduled to be undertaken between October 2016 through to June 2017.
According to Namrata Joshi, writing for 'The Hindu' in a 9th September 2018 article, the movie's filmmakers are "hoping for a shoo-in at the Oscars and a big worldwide release which is when the Indian press (not nominated for interviews at TIFF [Toronto International Film Festival]) will get access to the team behind Hotel Mumbai."
Dev Patel, star of 'Hotel Mumbai (2018), has previously starred in two other 'hotel' movies, 'The Best Exotic Marigold Hotel' (2011) and 'The Second Best Exotic Marigold Hotel' (2015). 'Hotel Mumbai' (2018) is Patel's third 'hotel' titled picture. Moreover, Patel earlier played a hotel waiter in the first episode of the television series 'Mister Eleven' (2011).
This India set movie partly filmed in South Australia where a couple of Bollywood films have previously lensed. These include 'Road' (2002) and 'Love Story 2050' (2008). The 2013 Bollywood movie "The Attacks of 26/11", which was made and released about five years prior to 'Hotel Mumbai', also covered the same events of the 2008 Mumbai siege terrorists attacks.
Working on this film as a producer was documentary filmmaker Andrew Ogilvie who was a producer on the earlier documentary 'Surviving Mumbai' (2009) which was about the same subject matter. Producer Andrea Quesnelle performed producing duties on both pictures as well, being an executive producer on 'Hotel Mumbai' (2018), and a producer on 'Surviving Mumbai' (2009).
The film for actor Dev Patel is the "second consecutive Australian-shot role after earning an Oscar nomination for 'Lion' " according to Sarah Ward at Screen Daily.
According to show-business trade paper 'Variety', "for many of the cast and crew, the Toronto [International Film Festival world premiere] screening was the first time they had seen the completed movie".
The film is based on the 2009 Emmy-nominated documentary feature film 'Surviving Mumbai' (aka the "Mumbai Massacre" episode of the "Secrets of the Dead" television series in the USA).
The film has utilized the Adelaide Studios' Mixing Theatre with local post-production company Kojo Post engaged to work on post-supervision, visual effects, and picture and sound services.
The film is based on the 2008 terrorist attack on the Taj Mahal Palace Hotel. Director Anthony Maras actually previously directed an unrelated earlier 'palace' titled picture called 'The Palace' (2011).
Both of the two 2017-2018 theatrical feature films about the 2008 Mumbai terrorist attacks feature a leading central cast member whose surname is "Hammer". In 'Hotel Mumbai' (2018) it is actor Armie Hammer who played David whilst in 'One Less God' (2017) (aka 'The Mumbai Siege' / 'The Mumbai Siege: 4 Days Of Terror') it is Martelle Hammer who played Claire.
Principal photography began on this picture in Adelaide, South Australia in August 2016 and continued filming in India until the movie wrapped in early 2017.
The film made its world market premiere at the Berlin Film Festival in 2017 according to show-business trade paper 'The Hollywood Reporter'.
The movie's crew features at least twenty-five producers who performed various producing duties (producer, line producer, associate producer, music producer, executive producer).
Debut produced screenplay of a theatrical feature film by the film's co-screenwriter Anthony Maras.
Producer Julie Ryan has said of this film: "Having previous collaborated with director Anthony Maras on his short film 'The Palace', it was great to work with him in bringing 'Hotel Mumbai' to life, and I wholeheartedly agree with [show-business trade paper] 'Variety' that he really is a director to watch. I am incredibly proud of this film, which is a life-affirming story of hope and compassion. The making of 'Hotel Mumbai' was a truly international collaboration in which Adelaide played a key part, and I can't wait to share with audiences at the opening night of the Adelaide Film Festival."
Both the Hindi language 'Shahid' (2012) from India and 'Hotel Mumbai' (2018), two dramatic theatrical feature films which cover the 2008 Mumbai terrorist attacks, both had their world premieres at the Toronto International Film Festival (TIFF) with 'Shahid' (2012) debuting in the fest's 'City to City Programme'. The two pictures world premiered at the TIFF about six years apart.
'Hotel Mumbai' is a co-production with international producer Basil Iwanyk (Sicario, The Expendables) and Australian Producers; Gary Hamilton (Bait, Paper Planes), Jomon Thomas (The Man Who Knew Infinity, Damascus Cover), and Andrew Ogilvie (Surviving Mumbai, The War That Changed US).
David Pisoni, South Australian Minister for Industry and Skills, has said of this film: "'Hotel Mumbai is a film that was driven by talented South Australian screen professionals and was partly shot in Adelaide, creating jobs for local cast and crew. Having 'Hotel Mumbai' open the Adelaide Film Festival, a world-renowned event, is the perfect opportunity to both showcase and be entertained by the world-class creative talents of our local screen industry."
Amanda Duthie, CEO and Artistic Director of the Adelaide Film Festival and Adelaide Film Festival Fund, has said of this film: "It will be a momentous occasion to open this year's festival with the stunning ADL [Adelaide] Film Fest Fund feature 'Hotel Mumbai', an extraordinary directorial film debut from South Australia's Anthony Maras with an array of exceptional local talent both on and off the screen. The 2018 fund line-up premiering at the ADL Film Fest in October will include some of Australia's most anticipated features, hot on the heels of the 2017 fund which included Warwick Thornton's Venice and Toronto winner 'Sweet Country', Australia's first ever Netflix Original feature 'Cargo', and series 'F*!#ing Adelaide' that went on to compete at Series Mania in France."
Producer Julie Ryan said: "I worked with writer/director Anthony Maras on his award winning short film 'The Palace' a few years ago in Cyprus and since then we've been looking for a project to make together. So when I heard from the Arclight team that they had attached Anthony to 'Hotel Mumbai', I immediately thought it was a perfect fit as its theme and tone are so similar to our film 'The Palace'."
The film's key creatives including South Australian director Anthony Maras and producer Julie Ryan will be in attendance at the Australian Premiere at the Adelaide Film Festival on Wednesday 10th October 2018 with additional special guests to be announced.
The film is presented by Screen Australia and Xeitgeist Entertainment Group, in association with the South Australian Film Corporation, and Arclight Films, and Adelaide Film Festival, Double Guess Productions and Screenwest. Arclight Films is handling World Sales, with Icon Film Distribution the Australian Distributor. WME and Verve are handling U.S. sales alongside Arclight Films.