The aquarium is really good. Lots of good restaurants bars in little five points. Downtown Decatur has a good scene as well. Chai Pani in Decatur has great Indian food. Braves game at the new park might be good. Hiking at Chattahoochee river and Kennesaw Mountain. Rent bikes and ride along the Beltline. For a longer ride, the Silver Comet runs from west of town all the way to Alabama.
Or come up to acworth And help me put my boat back together!