I live in RB and I reserved MY GYM in Manhattan Beach for my son's 4th b-day party. It sounds like what you're looking for - no set or clean up. I believe you can order the cake through them, although I don't plan to. Right next door is Fresh Brothers Pizza (literally next door and they'll give you 10% off your order if you mention you're having a party at MY GYM). I've been to Kids Concepts and Under the Sea and I think this place looks a lot cleaner. Hope this helps!