Anita Ekberg and Ursula Andress did nude screentests, Hollywood's first. However, the Hays Board removed all nudity from the finished film.
Frank Sinatra didn't believe in rehearsing or doing multiple takes, something which frustrated his director, Robert Aldrich.
Ursula Andress, who played Dean Martin's romantic interest in this movie, dated his son, Ricci Martin, in real life.
Director Robert Aldrich intensely disliked Frank Sinatra's non-professional attitude and tried unsuccessfully to have him dismissed from the film.