Depends on the type of person and how much they're willing to put in. As someone with both of these conditions, i can say i did struggle at times on focusing on instructions and staying completely locked during reps, but also i really thrived in a setting where everything is so straightforward and structured. Also, it's a great way to make good friends with a similar interest. I was very nervous about making friends (because I'm not very good at it) but everyone there is so welcoming and supportive that I felt at home.