Continuity: When Kevin first enters the hotel, he is told to get to the lobby he should go straight ahead and turn left. The next shot shows him turning right into the lobby.

Revealing: There is a moment in the movie when Kevin is throwing bricks at Marv and Harry. If you watch the moment of the first throw in slow motion you can see that Marv has blood on his forehead before the brick hits him.

Revealing: When the Wet Bandits are stealing the charity money from Duncan's Toy Chest, Kevin takes their picture twice, but only one of these pictures comes out of the camera.

Revealing: In the scene when the bandits are in the uncle's house at the bottom of the stairs, the tool chest falls down. When it hits the door and they slide back if you look closely you can see that they are on rollerblades.

Continuity: When Kevin is buying some toys at Mr. Duncan's Toy Store, he pays for the toys and there is a can full of pencils to the right of Kevin. As the camera switches shots to Mr. Duncan and back to Kevin, the pencils are in different positions every time.

Revealing: When Tim Curry runs out of Kevin's hotel room after being scared by the inflatable clown doll he hits his knee on a table. When he hits the table and then hops away you can clearly see that he is wearing a knee-pad.

Continuity: When Kevin is running away from Harry and Marv he buys strings of pearl necklaces, and pulls them apart on an icy corner. When the bandits slip on them, there are more pearls there than Kevin dropped.

Continuity: When Kevin bumps into the lady at the airport you see the guy who Kevin thinks is his dad run through the door and out of sight. In the next shot, you see him walking through the door.

Audio problem: When Kevin records the commercial for the Plaza Hotel, the phone number is cut off by his father's voice. When Kevin is in the hotel later on, he plays the tape and his father's voice is not on it at all and he is able to hear the phone number perfectly.

Other: In the scene where Kevin is making the hotel reservation on the phone, the lady does not even ask the dates of when he will be arriving and leaving the Plaza.