The movie is notable for featuring a young Courtney Thorne-Smith who became famous later on, and because of this, now gets third billing on DVD covers for the movie, whereas on original theatrical movie posters this was not the case.
This 1987 movie was the second of two consecutive films directed by comedy director Carl Reiner that featured the word "Summer" in the title. The first had been Reiner's 1985 pic Summer Rental (1985). Both movies were produced by the Paramount Pictures studio.
At the beach, after Anna-Maria removes her shorts and top to reveal her bikini, she is shown in the background of a subsequent scene with her shorts and top still on.
When Pam tells Freddy she wants to move in with him as her wish, and he goes to open the door to his apartment (with an armload of groceries), the door to his apartment is already ajar.