During their first meeting at the amusement park, Sandy is shown eating a turkey leg and drinking a soda while trying to convince Courtney to become his client. The turkey leg and drink change positions between cuts several times, and the turkey leg goes from being mostly eaten to barely eaten and back as the scene progresses.
At 44:25 - when Sandy's clients are running towards the pool and Courtney is teasing Sandy that she will put her whole foot in the pool if he comes one step closer towards her, look at Sandy's client (Shelly Desai) who is standing to the right of Kevin James' character. Shelly goes back and forth from taking off his tie and blazer to having his tie and blazer back on. He also keeps switching positions between standing next to and behind Kevin James' character.
When Sandy is talking to Arsenio at the newsstand, you can see two billboards for Jean Claude Van Damme's Timecop and Alec Baldwin as The Shadow. While the Timecop billboard is correct, The Shadow was released in July and was such a horrible box office bomb, it was out of theaters by the end of the month and would not have still had a billboard up on the Sunset Strip.
When at Muscle Beach the building jumped from is painted orange. That building is a well known landmark in Venice beach because of a large portrait of Jim Morrison that is painted on the side. In the 1990's that building was painted a light blue and was only recently painted a dark sunset orange by the original artist in 2014.