Other mistake: Never once does Rey leave any footprints in the sand, despite her being heavier than BB-8. And BB-8 leaves constant trails in the sand wherever he goes. BB-8 weighs approximately 40 pounds, with Ray, if going by Daisy Ridley's reported weight, is about 121 pounds. She would absolutely be leaving foot prints in the sand, especially when jumping around. (00:00:22 - 00:02:44)
Other mistake: You don't have to look further than the name; the title of the series is "Knight's and Magic" instead of "Knights and Magic".