It depends on your server. They will charge him as an adult at all buffet and character meals or any other all-you-care-to-eat locations. If it's an ala carte menu, it shouldn't be a problem. The only problem will be portion size. The kids' meals are portioned generously for the 3-9 crowd or right for an adult with small apetite, but there isn't enough there for a teen boy. I have a soon to be 14 yr. old son, and he'd want 2 kids' meals (at least).