We ended up using some of the kids' credits for breakfast. We'd get a kids' platter of bacon and eggs and share it. Remember also that restaurants that don't have a kids' menu will let you use the credit for an adult meal. For example, we were able to get a turkey leg using DD's credit (but no dessert since they didn't have anything). We had a great breakfast sandwich in AK back by the safari that we got with a kids' credit since there wasn't a kids' meal offered. We all split it to hold us over until lunch.
This isn't always true - maybe it depends on the place or maybe it depends on the CM but we were in line at Tamu Tamu last Nov when the family ahead of us overheard the cashier telling another family that they could not use kids credits there. The parents were not happy and were not shy about expressing their unhappiness, especially after a 15+ min wait just to get to the ordering window. The dads of both families ended up going to Pizzafari to get their kids meals there while the rest of the families got their meals at Tamu Tamu.