We also drive (from the Peoria area). In the hundred or so trips down and back I can honestly say there is not a "must do" place to stop and eat. We are in such a hurry to get there that we just drive thru and eat in the car.On the way home we are too bummed to stop and eat.
Enjoy your trip!!!!!
We travel a good part of our trip from Southeast Missouri on I-24 to I-75, then the I-475 by-pass then back onto I-75. Like DizBub we also drive thru and eat in the car most of the way. The kids love to picnic at the NickaJack rest stop which is outside of Chattanooga on the lake created by the TVA. We have stopped at some nondescript Mom and Pop eateries with mixed results. It is fun to explore and have these experiences outside of the fast-food world.