Other mistake: Joe Cirillo is credited as playing "Sergeant Munson", but his name badge in the movie reads "Edwards."
Continuity mistake: At the beach, Walter and one of the twins carry a box and are inches away from the boat. Half a second later, when the angle cuts to Allen asking the other twin, the first couple is standing behind, far from the boat, holding the same box and repeating the previous movements.Sacha
Factual error: When Allen falls into the water after Fat Jack's boat hits him, his wallet falls out of his pocket and rests on a coral reef. The ocean off Cape Cod is much too cold for coral reefs.