Continuity mistake: In the scene in which Armand and Albert are at the outdoor cafe, Armand is attempting to teach Albert to act straight. In the shot where Albert is trying to walk like John Wayne, the lady is watching him. She then looks back to her paper. However, when the shot changes, she is still looking at Albert and turns to her paper again.
Continuity mistake: When Albert and Armand are in the kitchen and they are discussing Val's interest in getting married, if you look at the glasses on the kitchen island, they change positions between shots. One of the glasses is more towards the right side even though everyone has already got their hands full. (00:23:00 - 00:24:00)matthewgregorycox
Continuity mistake: As the camera flies over the ocean and approaches the beach the white sedan changes into an SUV just as the camera is passing the street lamp. There are several other less obvious changes also going on at the same time but this one is the most obvious.
Other mistake: When the friends are hanging the mouse head, they tell Call it was from the antique shop across the street. But in the opening shot, it's obvious that the Birdcage faces the waterfront.