Goofs

There are numerous times when the immediate filming area is being rained on, but just down the street it looks like a dry, sunny day. There are also several "rainy" scenes with bright sunshine falling on buildings across the street.

At the start of the film, it is early autumn at a college an easy commuting distance from Manhattan. The trees are still mostly full green, indicating late summer/early autumn. However, later in the same day the main characters arrive in Manhattan they are at a hotel on Central Park, and the trees are in full autumn colors. This would indicate at least a month difference, as beyond any day-to-day local variance, Central Park benefits both from the "heat island" effect, as well as being on the coast.

In short, the trees in Central park remain green long, long after trees just outside the city, and for hundreds of miles south have turned to fall colors.

When Timothy and Selena share a taxi there are numerous angles with Selena's hair behind her ear and others with it across her forehead.

In the restaurant, when Ashleigh asks Francisco Vega what wine they are drinking, he says Chateau Meyney, but it's actually from Chateau Margaux.

When Ashleigh meets Gatsby in the restaurant after the failed hookup with Francisco, she's wearing flats--but when she left Francisco's place, it was clearly shown that she ran out shoeless.