I'm going solo this year, which I'm not thrilled about. But it's been manageable if not fun for the last few games up there. My approach:
Park at the high school where most of the Tech people park. Walk straight to the campus down that road that's mostly businesses and dorms - no frats, not many tailgates. Keep the Tech gear kind of covered up outside the stadium. Keep my head down and keep my mouth shut - the worst I've ever had is people yelling stuff at me from parking lots, and I just bite my tongue, never say anything, and keep walking. Try to walk near a group of non-hostile people (Tech or U[sic]GA); if they've got kids with them, even better.
I've never had anybody get physical with me, so as long as I can control myself it's generally tolerable if unpleasant. But I do worry that one of these years I'm gonna snap and go all "Coward of the County" on somebody up there. :-)
JRjr