My ds will be 13 on our next trip and he's pretty happy with
any AYCE buffet whether or not there are characters.

He's all about chowing down!
If your kids like buffets, give the Tusker House or Cape May breakfasts a try. You could also do Crystal Palace for breakfast, lunch, or dinner. Chef Mickeys and 1900 Park Fare have breakfast and dinner. Since the characters are probably most important to the younger child, pick a meal with the character(s) that child wants to see the most. Tempt the older ones with all of the food offerings they'll have.
You didn't say the gender of the kids, but you might want to consider whether or not a Princess meal in Norway would would for your group. That is one place my ds wouldn't enjoy much because it's not a true buffet and it's strongly a girl theme. He does get by just fine at all other character dining.