Continuity mistake: When Ben Jordan and Stan are walking around the fountain, they walk past a long glass railing. The white sneakers of the cameraman can be seen in the reflection on the glass. You know it's him because he stops walking when they stop and continues walking when they do.
Continuity mistake: At the start of the movie when the family is sitting at the dinner table discussing their highs and lows of the day, the plate of food in front of the daughter changes. The first shot when she is complaining about camp, her food is visible as three separate items (meat and two vegetables). When the camera comes back to her, the food is all mixed together on the plate. When the shot switches back to her a third time, the food is three separate items again.