The portrait hanging along the staircase of the beach cottage is of Captain Daniel Gregg, played by Rex Harrison, from The Ghost and Mrs. Muir.
The station wagon used in the film is a 1960 Dodge Seneca.
This is the first of two movies Maureen O'Hara made with Jimmy Stewart; in 1966 she also made The Rare Breed with Stewart.
Herb Alpert:
trumpet player at the yacht club.