Every tourist to Atlanta should visit Aunt Pittypat's Porch. It's like dining in a Gone With The Wind setting and it is a shameless tourist trap but the food is decent, ambiance is excellent and the prices a little too high but go just to say you have been there. You get cornbread served in a cast iron skillet, there is syrup on the table, all the dishes are southern style (well sort of) and the few times I have eat there it was pretty good. The pecan crusted fried catfish are pretty good for an appetizer and I recommend the venison stew which is also served in a cast iron pot with cornbread crust like a pot pie. They have a drink there called a "Leg breaker" that is quite interesting and I think the limit is 2 per customer.
Be aware this isn't grandma's kitchen cooking but I recommend the place as a novelty and a decent meal. Bring plenty of money.