Why didn't they just call the kids' parents??
I know that Gerry's dad didn't believe him, but I bet if Tim, Pat and the nurse called the kids's parents, then I bet the parents' would believe that the kids were being abused. I know that this is a movie and it's supposed to be funny, but in real life, if that ever happened, I'd hope the more sane adults at the camp would call the kids' parents and say, "hey, this is happening and you need to come and pick up your child."