Continuity mistake: As Shirley Jones is singing "In love with Me" at one point, she's sitting down, and is slouching back. The shot changes to the side, and she's sitting up straight, and is much higher against the counter than she was. Her hands have changed position as well, she's no longer holding onto the cup she had in her left hand. (01:19:55)
Continuity mistake: During the close-up in the small boat when Elvis and his date go ashore at the plantation, his sailboat has been anchored a long distance from shore. In the aerial view, his sailboat is much closer to the dock.
Other mistake: When the villan's car is stopped by the traffic jam, the background projection is still moving.
Continuity mistake: When Sam is going to the widow's house, he is carrying a box of chocolates and a bunch of flowers, but when he arrives at the door, the chocolates have disappeared and the flowers are completely different.
Continuity mistake: When Sylvester Junior is turning the wheel to pump oxygen into his father's diving suit, he spots a worm and starts following it, walking away from the pump. But when Sylvester bangs on the tank glass telling him to start pumping, we cut back to Sylvester Junior and he is back near the pump again.