I am a first year student at UF and I love it. There are 56 students in our class and we all got to know each other very quickly. Yes, a group of that size will form smaller social groups for going out (everyone has different interests), but we all get along very well- I like seeing everyone in the morning!
Our professors are great and most of them are downright funny which helps when you're spending about 30 hours a week in class. Based on personal experience and observation, our professors are very helpful with explaining the tougher concepts when you need the extra help.
You're not worrying for no reason. Picking the right PT school for you in an important decision. It's hard to get a good feel of the program when they don't conduct interviews and your only impression is the open house. To be honest, I had mixed feelings about attending UF, but everyone in the program is great and I've had an overall good experience with Gainesville in general. Lots of mom and pop places and the people are really nice. No regrets here!