Willie Garson who plays Stanford died during filming of this episode. The Producers wrote his character out of the show by having Stanford move away to Japan.
The first time Carrie has been referred to by her full name Caroline (by the bodega owner).
The child ordering a croissant is not much of a prodigy, she said "Je suis désolé, Mere...", which means "I'm sorry, mother". She should have said "Excusez-Moi Maman...".