With a campus as large as UA's, you are going to run into people of all different opinions, religions, races, etc. Around B.B. Comer, the hall of international studies, you will always see people from the Middle East or Asia standing around talking to each other in their native tongue. I think it's kind of cool ... if they came from the Middle East, a lot of them are Muslim and maintain the dress-code of the Qu'ran here in the states. You do have segregated sororities and fraternities, but that's another complicated matter in and of itself. LGBT is gaining a lot of ground; in almost every building you will see a teacher's door with a rainbow triangle outside the door that says "Safe Zone" meaning no judgement will pass through those doors and it gives people who are fighting with their sexuality to talk to someone and know that it will not be spread around. Then, homecoming comes and during the parade the LGBT group has a section in the parade and a lot of ultra-conservative families get very angry when a guy wearing makeup walks by in high heels. Every year, Kami-Con happens in which Manga and Anime geeks get to dress up, gather, and talk about their favorite show/book/movie. Overall, I do not think anyone would feel out of place on campus, you just have to find your group, if you will.
Attire is a funny thing: you would think sorority girls would dress up because, they're sorority girls. But actually, this is how you tell whether someone is a sorority girl or not: if they wear giant shirts with leggings in the winter and nike shorts in the summer, with tennis shoes (may or may not have calf-high socks), and maybe a hat under which their hair is thrown up in a ponytail, it's more than likely a sorority girl. I am not being judgmental by any means, I have friends in sororities and they talk about it too, it's just a fact. Frat pledges wear a particular color polo on a certain day and wear a suit every Wednesday. If you forget what day it is and can't check a calendar, look for guys in suits, if you see guys in suits, it's Wednesday (I did that today). As for the rest of us, we wear whatever we want: jeans, t-shirts, dresses, daisy duke shorts, whatever you want to wear...except a bathing suit; haven't seen that one yet.
Different types of students interact quite regularly. I mean if they are frat/sorority they are going to have their obligations to their frat/sorority but as for classes, a sorority girl will not snub nose a non-sorority girl because "they aren't good enough for them to talk to them". Most of the time..
If there were four tables in the dining hall, they would be: blacks, sorority girls, frat boys, Asians/geeks. (no disrespect intended)
Most students are from the surrounding states or within the state: Alabama, Mississippi, Georgia, Tennessee, etc. Most students are middle class - unless they are in a frat/sorority in which case they would have to have money in order to be in the frat/sorority.
Most students are politically aware, but I am not. I hate politics. But most are, predominantly, I would say they are right but I could be wrong and they could very well lean more towards center. I think a lot of students were reared in a conservative home but their views are slightly more liberal but not so so liberal as to say they are left winged.
In my experience, students do not talk about how much they'll earn one day. We are more concerned with getting through college than to concentrate on the future.