James Brown said out of all the times he did splits, the only time he ever ripped his pants was in this movie.
Frankie Avalon and Dwayne Hickman teamed again for Dr. Goldfoot and the Bikini Machine (1965), where their character names from this film were switched--Frankie now as '"Craig Gamble", Dwayne now as "Todd Armstrong".
June Foray has two uncredited cameo voice roles: the first as the actress in the Italian movie at the drive-in, and the second as the sped-up voice of "Miss Sally" speaking on the phone with Robert Q. Lewis. When her voice is slowed down she can be heard saying, in part, "Donald, did you hang up on me? This is a three-message-unit call!" and "I'm gonna tell your mother about this, the way you're treating me!"
End credits include a plug for upcoming "Cruise Party", supposedly the next picture in this new "Party" series, but it was never made.
Aron Kincaid lied to producers that he could ski. He was so inept that he had to be slid into camera range by grips for all of Freddie Carter's skiing scenes.