I'm going. Not a regular at the Dome, but we went last year for VT and here are some quick observations.
First, tailgating at the Georgia Dome, to me, really pales in comparison to tailgating at Bryant-Denny or other on-campus locations. I didn't have much of a sense of where anything was. Lots of marketing booths, for example. That being said, I think our strategy this time will be to pre-game at a bar close by and then head over to the game. We took the Marta last year, but I think I'd rather take an Uber this time, or just a cab.
The game itself will be a nice experience. The air conditioning, the beer and liquor for purchase, and the aesthetics of the pro venue make for a very different game experience than Bryant-Denny. We really enjoyed it, although it "felt" noticeably smaller. It's a real contrast from the Bryant-Denny experience.
Also, just FYI, Smith's Olde Bar is kind of regarded as the Bama bar in Atlanta. I don't know how much action there will be on Friday night, but I suspect Saturday night after the game might be pretty happening.