There’s no game time for Florida game yet - so could be anywhere from around noon to 7 pm. Look at http://www.gamecocksonline.com/ot/game-day-information.html for general information including about shuttle and clear bag policy. The team does Gamecock walk approximately 2.5 hours before kickoff which is fun. If the game is in middle of day, it will take up most of your day.
If game is in evening, then visit the Soda City market on main street on Saturday morning. Lots of good food and a feel for downtown where there are lots of students now. Great food truck options. If you want to eat in some USC favorites, try Yesterday’s, Andy’s Deli or Groucho’s in Five Points. Beezers and Cool Beans near Horseshoe. Lots of good food in Vista as well.
Check out the USC newspaper The Daily Gamecock online before you go to see what’s happening around campus that weekend.
Have fun.