I think Boma has a lovely breakfast buffet! We really enjoy eating there on our departure day, just taking our time. Which won't work this year because our plane leaves at 8 AM.

But I digress...
Yes, I highly recommend going to Boma for breakfast! It is less expensive than the character breakfasts but the food is better. There is also a beaded jewlery activity at AKL on Saturdays if you have time to kill. Ages 13 and up, you select your beads, arrange them on a bead tray, string them, and then the ladies put the clasp on for you. I made a very nifty bracelet in August, and DS made a necklace for Princess. He was SO proud of the way he hand selected the beads JUST for her. It starts at noon, I think, and you do NOT have to be an AKL guest to participate. You pay for each piece by the inch - my bracelet was about $7.
The kids menus at the signature restaurants are usually pretty decent. Grilled fish, steak, etc. For teens with small appetites it works great to do an adult appetizer and a kid entree. Or the kids menu at Yachtsman has chicken noodle soup for an appetizer, fish for the entree, and ice cream for dessert all for like $12. The portions are small, but it works out to be enough. We don't do Dining Plan anymore - we lose so much money I can't stand to think about it. The buffets kill me, too. $25 for DS to eat a waffle and a handful of grapes.

They say he will hit a "growth spurt" one of these days. We shall see!!