Factual error: Jim looks at a postcard sent to him from Nadia and it's addressed to 7 Beach Way, Grand Harbor, MI 49456. There is no Grand Harbor in Michigan. 49456 is a real ZIP (postal) code for Spring Lake, Michigan. (01:00:40)
Factual error: The movie is supposed to take place in Michigan, but you can often see the southern CA mountains in the background in the beach scenes. There are no mountains in Michigan that look like those.
Factual error: The end credits to the movie, which features the Harvey Danger song "Flagpole Sitta" (1997), incorrectly credits it as "I'm Not Sick But I'm Not Well" by LIT. No such song exists, nor have LIT or any other group ever officially recorded covers of "Flagpole Sitta."
Factual error: The movie takes place in Michigan, however when the boys first arrive in town, a sign reading "United States Post Office Seal Beach, California 90740" can be seen in the background. (00:21:55)