The kids are old enough to tour the parks on their own, and you can stay in touch with cell phones. They may want to do their own thing in the morning and you can all meet up for lunch.
Mythos is a great idea. Take a lap around IOA, then head to lunch around 11:30am. There may be a 10 minute wait, but it's ok. Don't over eat, save room for desert. There is free soft bread to get you started. The Wrap of the Day can feed two people, it comes with plantain chips. If you save room, you can share a desert called a Taste of Chocolate. Total food bill if you share will be about $25 for two people. Wrap is $12.95, desert is about $8, and then tax and tip. Pictures are here.
http://www.nogodforme.com/mythos.htm
I talk about sharing, because on our last trip, a couple near us ordered a meal for each person, ate most of it, then didn't have room for desert. As we walked out, they mentioned how jealous they were of our desert.
The other idea is arriving the Hard Rock Cafe at 11:30am, and share a couple appetizers, like the Jumbo Combo. Again, you save money doing this, and don't get too full that it makes you tired.
My last idea is to order pizza in from Flippers. Scroll down this page for info and the menu. This is a good idea for when you want to stay in your room. Salads, pizza, and sandwiches are great.
http://www.nogodforme.com/IOA072905.htm