I would recommend dinner at
Chef Mickey's in the Contemporary Resort.
There are separate buffets for adults and kids, although kids can still select from the adult options. Your boys are sure to enjoy the dessert selection which includes make your own sundaes.
If the kids feel antsy, they can "party" with Mickey, including singing, dancing and waving their napkins. Okay, I'll admit I love waving my napkin too.
After dinner, there are shops to explore or you can take a round trip ride on the monorail. It's easy to reach by car or your resort transportation. Just take your resort transportation to the Magic Kingdom and then walk, bus or boat to the Contemporary. It's a great first night adventure!
It's a wonderful place that caters to children of all ages. Call 407-WDW-DINE (407-939-3463) to secure your Advanced Dining Reservation.