Revealing mistake: When ice is shedding from the plane's wings, the chunks slowly slide forward and then down the leading edge. Loose chunks should have flown off rapidly to the rear due to the airflow.
Revealing mistake: During the outdoor party at the Rainbow Cabins Marilyn asks the DJ to play "Kiss" in order to drive her husband George nuts, and after a couple of minutes he comes out and smashes the record. As he walks back to cabin B it's obvious this is a set as there's nothing inside the room except a blank wall. (00:20:15)
Revealing mistake: When Nicky is taking a shower in the trailer, on two different occasions you can see the beige colored towel that is wrapped around his waist.