Jesus, SJR.
I can't believe we saw the same film. I'll grant that the film is filled with broad stereotypes everywhere, but that's the key: They're EVERYWHERE including the American kids, who couldn't be more archetypal. That's just the sort of comedy this is.
But I can't believe you didn't think there were a number of good gags in that film. At least you didn't give away, IMHO, the most unexpected cameo.