There are so many large organizations here! Cultural organizations, such as the Latin American Student Association have grown incredibly in recent years. My own Japanese Club has grown to a healthy number of active members from 40-80 members and over 500 total members. Professional societies also tend to be large in membership. Greek societies are popular - although the students sometimes clash with regular students.
My own organization - the Japanese Club at USF is an organization I began here. Over 70 events have been ran through the organization since the summer of 2009 and we have donated to the Tohoku Japan Earthquake relief in the past and organized massive cultural events on-campus to raise awareness of Japanese culture. Many people are interested and it has a positive impact on our school, in my opinion.
Students usually lock their doors in the dorms - they don't want people sneaking through their rooms. Football games are popular, but other sports have a hard time bringing out crowds. Guest speakers are numerous and from all backgrounds and professions - usually hundreds of people will attend these lectures.
The dating scene is average - not over the top. You won't even notice that many people are in a relationship. I met my closest friends through my student organization - yet another reason why I'm glad I made it.
If I'm awake at 2am on a Tuesday...I'm in the library working on something or I'm at a nightclub or bar with some friends.
Traditions are numerous on-campus from the SuperBull Homecoming Week to Mr. & Mrs. USF to Stampede of Service - USF tried to create new traditions every year. Events happen almost every week - multiple times a day.
People usually party Thursday-Sunday - but this varies.
Fraternities and Sororities are active - but keep to themselves. They take part in their philanthropies and socials, but I feel personally that they don't do enough to unify the campus and don't use their resources for the betterment of our university.
Last weekend I went to a chocolate festival in Clearwater - one of the nice things about our university is that is between Tampa Bay's 3 major cities and you can easily drive to one of those towns and engage in what is happening off-campus.
On a Saturday night you can attend a concert, cyber bowling, enjoy late-night sushi, ice skating, hang at the beach or local beach towns, hang out a mall, karaoke, rollerskating, play at an arcade, watch a movie at a local movie theater - there is plenty to do if you're looking.
I tend to do most of the things listed above when I am off-campus.