Horror director Sam Raimi, who plays the character Stick Coder also attended this camp (Camp Tamakwa) as a child.
The characters of Matt and Brad are based on the two Michigan-born founders of the Canadian clothing company "Roots". In real life, they actually attended Camp Tamakwa, which is a real camp in Ontario's Algonquin park, which is where the film was shot.
Where Bill Paxton looks at Alan Arkin's collar and it says Lou Handler, that was actually the real founders shirt
The movie was filmed at writer-director Mike Binder's actual child-hood summer camp, Camp Tamakwa in Ontario, Canada.
Ensemble cast member, sci-fi/horror director Sam Raimi, and the film's director, Mike Binder, were childhood friends.