I first saw this movie on television in the 1980s, and I immediately loved it and enthusiastically set out to get a copy of it. Yes, objectively it's a terrible movie with ridiculous humor, but those facts are obvious enough that they doesn't need to be belabored. Now let's look at what the film has going for it:
1. set in Florida
2. '60s culture
3. '60s music
I truly love some of the songs in this film, especially "Come On Down" (?), "Wild Way of Living," and "The Turtle" (?), especially when set to scenes of teenagers dancing in swimsuits, rushing around in cars, and cruising on boats, all with a '60s Florida backdrop and a party feeling.
4. '60s architecture
5. Jayne Mansfield
6. ladies in swimsuits
7. captures a party feeling
Although much of the humor is marginal, some of it is good, and some of it is quite original. For example, I thought the part where Junior (Jayne Mansfield) is tied up to an air conditioner that is supposed to destroy the building when it's left on too long was delightfully offbeat. And while tied up Jayne can't help but get carried away making kissing motions at the camera, which "forces" them to do multiple takes, whereupon she keeps doing exactly the same thing, and they leave all those takes in the movie.
9. offbeat touches
The air conditioning threat, the acoustic guitar duo that starts the film without warning, the film cards left in the final footage, Irving's "B-I-K-E" emphasis are all totally unexpected, original, and wacky, which adds to the humor.
10. film obscurity
11. scientific touches
This film came so close to being great. If only they had put some fast footage-with-music scenes, like at the motorboat scene in the part where "Wild Way of Living" is playing, in the style of the aerial scene in "Where the Boys Are" (1984) where the fast song "Hot Nights" is playing, or in the style of some of the better episodes of The Monkees or Laugh-In, this would have become a very appealing film that would have perfectly captured the beach party feeling. And some better Florida scenery thrown in, even if unrelated--better beaches, more theme parks, interesting buildings, parrots, iguanas, coral reefs, and so on--would have added attractiveness, interest, and ambiance. And a sexier scene of Jayne, a more straightforward plot, a clear-cut ending, and fewer old-fashioned songs all would have helped to streamline the film, and all that would have been so easy to do.
They had the right models, the right music, and the right locale, but they simply didn't put them together correctly. The essence of a great beach party film is here, but as it is you have to sort of read between the lines to enjoy it.