Our kids are 8 & 9 and we just got back. For us, we needed to feed the kids and then get everyone ready for the 6:30 show, so we went up to the fast food by the pools. There's pizza, tacos, handburgers hot dogs, fish and chicken burgers and of course fries. You can get milk on this deck as well as water or buy sodas.
After the 6:30 show we usually went to the Rockin Bar D for the shorter 7:45 show which was very entertaining in a smaller place where the kids can usually sit on the floor up front. The show always ended in time for us to go right to the 8:30 seating. My younger son often fell asleep during dinner while we held him and ate - tricky - or took turns taking him to the room. The waiters are very willing to send dessert or entrees with remaining family members to any that have gone to the room early.
As much as my kids enjoyed those 7:45 shows, the later seating ended up being worth it. Some kids like to eat with the clubs - our kids liked the computer time and some of the activities but never wanted to eat with them, so we didn't push it.
Have a great time! Try to relax as soon as you get there!