aka Happy Campers, aka Summer Vacation, aka Meatballs 4: To the Rescue, aka Meatballs 4: Summer Vacation
How bad is it? It's about as bad as sequels get.
Should you see it? No.
The good news: there's no Meatballs 5.
This time Corey Feldman stars, making a grand entrance by parachute and skateboard and finishing the film breaking the 4th wall saying "I was in 'Goonies!'" Jack Nance is the owner of the failing water skiing summer camp that has a fortune in equipment and tons of college-age girls that could be models (certainly not actresses) who are willing to go topless. There's a rigged competition that Feldman wins anyway and the payoff is a rematch, which goes as expected.