when Larry jumped in the swimming pool with his friend, it shows they were completely under water. A moment later they were talking in the pool but their hair was completely dry.
When Larry gives the safety spiel, he says the plane is a 737, but seating configuration indicates it's a wide body.
When Larry is performing the safety demo, he holds up a replacement seat belt (as evidenced by the hook attachments on either end) rather than a demo belt (which has a buckle on one end and a metal tab on the other).