Among the casino marquees that the boys pass advertising show headliners include Joe E. Lewis, Elvis Presley, and Dean Martin and Jerry Lewis.
The original screenplay by Erna Lazarus concerned the adventures of a down-on-her-luck ex-chorus girl and a con man as they made their way to California. It was conceived as a vehicle for Shirley Booth and Humphrey Bogart. By the time Frank Tashlin got through re-tooling it for Dean Martin and Jerry Lewis, it bore little resemblance to the original script. Nevertheless, Lazarus retained the sole writing credit.
When they arrive in Hollywood, Anita Ekberg is starring in a movie where she plays Napoleon's lover. That same year, Ekberg was featured in War and Peace, another Paramount release, which included Napoleon as a character.