Caroline says that Earl has all three types of Diabetes, which is impossible, because Type 3 is only for pregnant women.
The girls are hiding in a large tub in a men's locker room. The attendants come in and fill the tub with ice and water, seemingly not noticing the girls. There is no way whatsoever the attendants would miss two grown humans in that tub. In fact, the one on the left looks directly into the tub as he's pouring.