Hi Donna,
When I think of dining with teens and pre-teens, I think that you probably want a place where you can all laugh and get everyone talking.
I've got two restaurants that I think would be perfect for this:
50's Prime Time Cafe - Located at Disney's Hollywood Studios, this restaurant will bring the adults back to an era gone by, while showing the kids what it was like "when I was a kid". This dining experience features wonderfully interactive cast members that truly treat you like part of the family. The menu features a variety of comfort foods including steak, chicken and pork.
Whispering Canyon Cafe - Is located inside Disney's Wilderness Lodge. This restaurant is a casual, delicious and fun dining experience! Like the 50' Prime Time Cafe' the cast members are wonderfully interactive and make sure your family has a lot of meal time fun. The menu is full of options for every member of your family, be sure you have one of the kids ask for ketchup!
I hope this helps, enjoy your vacation!