Continuity mistake: In the scene where Beth is talking to Katie about how to look "hot," Katie's necklace alternates inside and outside of her shirt between shots.
Continuity mistake: When Coop goes to Katie's room to talk to her, she's standing in the doorway. If you look behind him (from Katie's point of view), you will see it is raining outside. But the next second, when the camera changes shots, it has magically stopped raining. The camera changes shots again (from Katie's point of view) and it shows that it is raining outside again.
Continuity mistake: During the scene where Andy throws his food all over the floor, the position of the food changes places after it is thrown.
Continuity mistake: In the scene where Lindsay and the other girl counselors are preparing to go swimming in the lake, Lindsay removes her shorts twice.
Continuity mistake: At the talent show, whenever shots of the stage are shown, we can see the back of the girl's head that is sitting in front of J.J. and McKinley. The problem is, in these shots, J.J. and McKinley aren't sitting behind her, other campers are.
Continuity mistake: Even though it's supposedly warm enough to go swimming and wear shorts, you can see the actors' breath as they speak. It's very noticeable in the first mess hall scene where Gene is yelling and later when Andy is watching the kid water ski.
Continuity mistake: During the talent show scene, the boy in front of JJ and McKinley keeps changing. First it's a boy wearing a white and red shirt, and then it's a boy wearing a green and orange shirt.
Continuity mistake: After Beth finishes talking to the counselors and they all walk away, she yells something at all of them, and Katie can be seen on the left side of the screen, at the bottom of the steps tying her shoe. When the shot changes to JJ and McKinley, you can see Katie in the background, suddenly at the top of the steps.