When the Bundys enter the theater, Al comments that all the shows are sold out except for "Coffee Cups for Two" but later on when he accidentally wanders into the wrong theater and announces that this movie has nudity, all the males in the previous theater stand up and join Al and somehow find seats to watch the movie in its entirety.
When the Bundy family crowds around the concession stand, Peggy begins saying "Bon Bon" but the camera is focusing on Raisinettes, not Bon Bons.
Peg orders Bon Bons at the concession stand. A few moments later, the other Bundys order additional items. However, the cashier has already begun to place these items on the counter before they've spoken.
When the Bundies are scoffing down the packets of food at the counter, the packets are already open when the packets should be sealed.
Just before Bud gets flung across the auditorium for the second time, by the large man who sits on him, the stunt person can be quickly seen crawling into the row of seats behind them to prepare to be thrown.