Skateboarding Camp for a 4/5 year old?

We are considering signing up our younger daughter for a skateboarding camp through Alameda Rec & Park Department, along with her older sister. But some websites and other classes say 6 years old is the minimum and she will *just* be turning 5 when the camp starts in the summer. Does anyone have any experience teaching their older 4 or young 5 year old to skateboard? How did it go? Does anyone have any experience or reviews on the Alameda RPD skateboarding camps? If she does get frustrated or needs to go slower, I just want to make sure they can accommodate. Thank you!!!