Lots of neat ideas and suggestions!
Around the World, Roadfood Shack, Second Time Around, and ok "state fare".
My origional idea was a Jack in the Box sized place with a playground and a drive through and about 50 of the top "fair food" items. If it worked you could have lots of em. The big destination type idea is good also but I think you would need attractions. Maybe that dancing chicken #@^*. Hey both ideas could work together! The main restaurant and the branches.