Hi Amanda
You are going to have so much fun!! I'm 57 and took my DD 33, and my DGD 4 1/2 and my 3 DNieces in August. My DNieces are 13 and 11 and had never been to DW. They loved it. Some good counter service places are Columbia Harbor House, Pecos Bills (it was just ok for us), Cosmic Rays in the MK. I ate at Backlot Express when I was in MGM in Dec. and that was really good. I had a veggie sandwich that was delicious. If you like Mexican food, you could try the outside cantina across from the Mexican pavillion in Epcot. The food is ok, but the margaritas are really good. Are you eating any table service meals in the parks or at any of the resorts? You should make your ADR's so you won't have any trouble eating where you want to. I'll be in DW with my DH in Dec. also, and have all my ADR's made. Have a great time!!
Joan