we always have cereal and milk in the room before we head out...
and i carry cinnamon raisin bagels in my backpack for the kids to snack on if they want to when we're waiting in line...
the other day when we were at AK, we had a snack in Africa while we waited for our Fastpass window....they sell fresh fruit there, which caught my kids eye.....it was nice sitting in one of the hidden away table areas, having a snack for 20 minutes, and then using our fastpasses for Kilimanjaro Safaris....