Hi, Gina! I think you will find that
Chef Mickey's at the Contemporary Resort is exactly what you are looking for! Here, Mickey serves up a wonderful buffet for breakfast and dinner. Joining Mickey are Donald, Minnie, Goofy, and Pluto. (Here, and at all character dining locations, characters are subject to change without notice.)
Advance Dining Reservations are a must for dining at Chef Mickey's. To make a reservation, call (407)WDW-DINE. Since you are so close to your travel date, you might have to be flexible with your dining time. Try for a very early breakfast or a late dinner.
I hope your son enjoys his Walt Disney World vacation!