When Alec is getting ready to come up to the building roof top to meet Jonathan, he grabbed a bottle of white wine with a golden colour seal. When Alec is on the roof top the bottle is of a red wine with a dark colour seal.
At the audition of Alec with Liz, it is established that Alec lives on the fifth floor while Isabel lives on the third floor. But at the beginning of the movie, Isabel comes downstairs from her apartment and passes another apartment door near the stairs. Approximately five seconds after she passes, Alec comes out of THAT apartment with his dog. Since when is the fifth floor at a lower level than the third floor?