I am a huge fan of POR, but for kids the ages of yours I think I'd actually go for the Dolphin. Rooms and bathrooms are definitely larger and the Grotto pool, shared by Swan/Dolphin is huge and nice for older crowds. Also, I think older kids would love being located right by the Boardwalk where there is so much to do (eating, shopping, bikes, ESPN Zone, etc.). It's also nice to have transportation options to the parks beyond the buses.