Paula Prentiss signed a seven-year contract with MGM in 1960 when she was cast in this movie. She was living with boyfriend actor Richard Benjamin at the time, which was taboo in those days, and the studio didn't want her traveling on promotion junkets with a man who wasn't her spouse. So they asked the two to wed, though not before milking the wedding for publicity. Prentiss had to make long-distance calls to gossip columnists Hedda Hopper and Louella Parsons just before the ceremony, according to People. They were married by a New York judge on Oct. 26, 1961. They are still together as of 2022.
Dolores Hart left Hollywood a few years after this movie was released and became a Benedictine nun; she has been a Mother Superior for many years. As a member in good standing of the Academy of Motion Picture Arts and Sciences, she is the only nun who votes for the Oscars.
At the time, the drinking age in Florida was 18, yet the bartender talks about the age being 21. In California, however, 21 was the drinking age (since 1933). It remained so when the rest of the nation joined that requirement with the passage of the Uniform Minimum Drinking Age Act of 1984 with the exception of Louisiana which didn't fully change the drinking age until 1996.