I don't think a gym should say parents are not allowed to go. That would make me suspicious. However, I think it is important that if for some reason you can't attend you should feel comfortable enough with your DD's coach to know she would be in good hands. Also, does the child care? Some kids would love the opportunity, and don't get the experience because mom is too worried. While parents need to make the final decision, I think being open with the kid and letting them have a say is important.