Have done some of this at a few resorts, we're in our 50's but for little children, that small, for the money extra for this level I wouldn't do either. For what tikes eat, one meal split between them from the 24 hour resturant or just plain brought in with you snacks in the room are cheaper. You'll still want to dine out in various resturants so the saving on conceirge services is nil. Rooms are the same size as regular rooms, you're just on a separate floor with room key access. On a 6 to 10 night stay, its alot of extra money thats not spent to its best extent. Don't get me wrong, its nice for 2 adults but we don't use it every trip, when we munch there we skip alot of out favorite resturants and we kinda like the other dining at WDW and when you pay for conceige, its mostly the snacks your after. Having someone get my tickets or make reservation, I can do that myself from the room or from home before I go and its PS anyway, nothing guaranteed anymore, first come, first serve. Just weigh the differences in price for what you get, espically with little ones.