I'll be making my first trip to Columbia this weekend. Looking forward to the game and seeing the campus and city.
All general admission seating isn't it?
Hope you have a great time! It is spring break this week, so the town is a little quieter than normal. That should help you get in to any restaurants easier than normal.
Technically, all of the seats with backs are reserved, however there are only about 10 people that would care enough to kick you out of their seat. If you get there 15-20 minutes before the game you should pretty much be able to pick your seat.