Continuity mistake: When Jim sees Lauren buying adult magazines at the drugstore and goes over to speak to her, the magazine on the top row beside Lauren's head is a copy of SEC, with a football player on it, then it changes to ELLE magazine, with Shakira on the cover, then back to SEC, then at the very end of the scene as Lauren puts the unwanted magazines back on the shelf it goes back to being a copy of ELLE.
Other mistake: When they are riding ostriches, if you look on the ground there are just human footprints. There are no ostrich footprints visible. (00:53:40)