The underwater sound system is more hype than reality. You see, the water is only 3 feet deep in most places, barely waist deep. So it's kinda hard to stay underwater when it's so shallow. You can hear the music, but it's kinda sounds tinny. But, they have speakers set up all around the pool playing pop music, and they sound awesome. Scroll down this page to the middle and you'll see people throwing the nerf foodballs. http://www.nogodforme.com/IOA072905.htm
Thanks for that info Robvia. We have switched to HRH from PBH because of the pool and because it looks more fun than PBH. We are wanting to stay at all 3 US resorts and have done RPR. Guess we will leave the most expensive till last.