Georgia grad here feeling the need to add a another pro UGA reply.

I know very little about the UF experience, so please don't view my comments as counterpoints to previous posts or as if UGA has what I mention and UF doesn't.
My DH was at UGA in the late 80s, I was there early 90s, and while we had completely different experiences, we both loved it! He was a fine arts major and was not involved in Greek life, and I was a liberal arts major in a sorority. When I was there, and I think it's still the case from kids I know attending now, Greek life is what you make of it. I had friends in it, friends not in it, and from my perspective, nobody seemed to care. Knowing no one as a freshman, joining a sorority was a great way for me to meet people when I first got there, but my friends were not limited to sorority and fraternity members. As someone mentioned, Athens is such a cool town, and I think the arts, music and food scene was more important than whether or not someone was "Greek." I see that currently, 26% of students are in a sorority or fraternity (31% female, 20% male) - certainly a presence but not dominating.
I don't have percentages on the liberal/conservative front, but I would not describe the town of Athens or UGA as overly conservative. I realize Georgia tends to be more conservative as a state, but like most college towns, Athens is more liberal. Again, the music and art scene is big there, so the vibe at the school and in the town is far more open than you might think.
I realize UF has a lower admit rate, but I can't compare the actual education received at the two schools. I know smart successful alums from both. Georgia has the "Double Dawg" program
http://doubledawgs.uga.edu/ that is a great opportunity and definitely worth checking out (I think UF has something similar.). UGA also has an honors college
https://honors.uga.edu/index.html, and I hear positive things about it (a close friend's child is in the program).
I live in Georgia, so UGA grads are definitely viewed as better than UF grads; but we may be a little biased.
Congrats to your DS! I'm sure he would love either school!