dh would go and then dd8 would follow. And dh would always be at the bottom to catch her. They did this about 7 times and the lifeguard had no issues with it. Then I guess someone new came on and they did it again, now as soon as she was down, he would make sure they got out of the way. But the last time when dh was waiting for her, this other lifeguard starting yelling at dh to get away from the slide. Well, he wasn't going to leave my dd without telling her and she was already on her way down, she'd have freaked out. So, he waited, caught her, and then they left the pool area. The thing is, they weren't bothering anyone else, they weren't preventing anyone from coming down, they weren't in anyone's way, and they weren't horseplaying. And not waiting at the bottom of the slide is not a posted rule that we could find anywhere, it should be posted at the slide if it's that big of a deal.