With boys 10 and 13, I would recommend either the Contemporary, with its great game room, watercraft rentals, and convenience to the Mk, or the Yacht and Beach Clubs, with Stormalong Bay (will be closed until April), and within walking distance to Epcot, MGM and Boardwalk, not to mention Fantasia Gardens. You can also reach those places by boat (with the exception of Fantasia Gardens).