Second Terrapin. They have some great standards, and some amazing seasonal and side project beers. One of my favorites from them Big Hoppy Monster is about to come out in a week or two. If you want to check out their site they have some good information on their beers.
As far as beer bars there are a number of good ones including 2 that are on a few lists for the best beer bars any where. Porter bar in little five points and the Brick Store in Decatur.

Decatur is also a great place to get some food with a lot of great local choices.
Another good place to check out is 5 seasons brew pub. Not big fan of their food, but they have some good beer with some unique options on tap on a fairly regular bases.
Places to go. I am a hiking fan and stone mountain state park is a good option and the aquarium is as well, but it can be a bit busy.
I do have one suggestion on what not to do. DONT go to World of Coke. It is an overpriced advertisement. The kids will probably love it, but you will want to end yourself half way through just to get out of there the fastest way possible.