Depending on how much freedom you give them I would have to say POFQ. It's small, has a great arcade, food court and swimming pool. You can walk to the POR, rent bikes and explore there also. Then they can take the boats to Downtown Disney. My boys are 17 and 15 now and even if we are staying at the campground they will go visit POFQ and POR and take the boat ride to DD.