Fred Astaire's character says he learned to dance at the 'Arthur Murray' dancing school. Astaire had previously been in a dispute with the company over the unauthorized use of his likeness.
Cut from the film was a home-front-flavored swing number, "Harvey, the Victory Garden Man" (music by Harold Arlen, lyrics by Johnny Mercer), sung by Ella Mae Morse to the backing of Freddie Slack and His Orchestra.
During the build-up to the finale of "I've Got a Lot In Common With You", Fred's part of the routine passively disturbs the soldier he met before the number who needed to go to town when he dances.
During Joan's photo tour of the docks, the docks are gated and patrolled by security due to wartime as unloading of a ship goes on, but Fred manages to get aboard ship and borrow a dolly without anyone seeing him.
When Fred's escort in the parade shows him to the door at the hotel, she turns as the hotel room doors open. The next frame, they are back together in their original positions before the door opened. This is supported by the later photo of them that Robert Benchley shows Fred at the bar after creating the Flying Tiger drink.