Jack Lemmon's real-life son, Chris, played his movie son "Josh", and Jack's wife Felicia Farr played a fortune teller.
The movie was shot in the Malibu beachside home of writer and director Blake Edwards and wife Dame Julie Andrews.
Because it was a non-union shoot, picketers appeared at Blake Edwards' house to disrupt shooting. Problems were resolved between Edwards and the union.
The scene where Dame Julie Andrews and Sally Kellerman walk on the beach at sunrise had to be postponed three times due to early morning fog. Blake Edwards wanted the sun in the shot.
Dame Julie Andrews' stepdaughter, Jennifer Edwards (with Blake Edwards) and daughter Emma Walton Hamilton played her children in this movie.