When Danni sneaks out to meet Court at the pond, it is full night. But when he gets mad and then she runs away, there is light pouring down through the woods.
When Dani returns home from her first kiss her Dad calls her over to talk. As she approaches him there is a tractor in the distance moving to the right. A few seconds later the tractor is moving to the left, it did not have enough time to turn around.
The first time Dani goes swimming in the pond, we see her running naked; but as she jumps in she's wearing undergarments, as well as when she climbs back onto the dock. When she climbs the ladder, she's naked again.
While waiting for Maureen to vacate the bathroom Dani turns on the record player to play her well-worn Elvis 45 "Loving You". The sound starts immediately - but in 1957 record players used vacuum tubes, not transistors, and they took about 20 seconds to warm up before the sound started working.
Reese Witherspoon's flesh-colored top can be seen when Court discovers Dani skinny-dipping as she gets out of the water.
The tin of Nabisco Premium Saltines on the kitchen counter, with a black diagonal stripe and the word "Premium" printed horizontally, was introduced in 1978.
When Dani is sitting on the bed, on the wall behind her is a photo of an older Elvis that was not taken by 1957 (when the movie took place) but taken in the mid to late 1960's.