After MGM executives saw a close-up of Peter Lawford in this movie, they decided to sign him to a contract.
Many cast members in studio records/casting call lists did not appear or were not identifiable in the movie. These were (with their character names): Landlady Sara Haden, Military Policemen Jim Davis and Cliff Danielson, Party Girls Jacqueline White, Marilyn Maxwell, Betty Jaynes and Marie Windsor, Boat Owner Hobart Cavanaugh, Carhops Helen Thurston and Frances Rafferty, Lieutenant James Millican, and Defense Instructor John Dilson. A modern source lists Ava Gardner as a cast member, but she was not seen either.