Unless it's changed recently, you get to carry your own raft up the stairs while in line at TL. BB you get the raft at the top of the ride. For kids 9-11 yrs. I'd vote for BB. Ski Patrol is great for those ages, plus they're big enough for most of the other rides/slides. The wave pool is much tamer, so nobody's getting knocked down and scraped up by the rough bottom of the pool. I think the lazy river is a little longer at BB also.