Corrected entry: Several times in the movie we see Peggy Sue's room is on the upstairs level, but when Charlies sneaks into her room in the middle of the night, he easily crawls through her open window at ground-level.
Corrected entry: Peggy Sue laughs out loud at the fact that her father bought an Edsel, presumably because of her future knowledge that the car was a total flop. But the car failed precisely because people thought it was ugly THEN; it didn't become ugly in retrospect.
Correction: There's no mistake. The car was a flop then as it was later seen to be. She doesn't have to be laughing from future knowledge.
Corrected entry: While watching television with her sister, Peggy Sue sneaks a drink of liquor and sets the bottle without the cap on, back down. When she comes back in the house after viewing her father's new Edsel, she picks up the bottle and has to take the cap off.
Correction: While she is drinking, there is a shot of the TV, and her sister calling her back to watch--enough time for her to put the cap back on, so it would be there to take off again.
Corrected entry: In one scene, Kathleen Turner and her friends are riding in a convertible and when the reach their destination, not only is the top up, the car isn't even a convertible anymore.
Correction: The car is a hard top with a glass sun roof, not a convertible.
Correction: He isn't at ground level, he's walking on the roof. We first hear him climbing, then he steps across the part of the roof that's in front of her window, then he climbs in.