The thing about Tio's is that it is open late. However, that's not enough in my opinion. I went there a few years ago when it was after 10pm and not a weekend night, so my choices for Mexican were severely limited. I was a bit encouraged by the place featuring dozens of bottles of different kinds of hot sauce, but unfortunately, they didn't seem to actually use any of them in preparing the food. When I was on campus recently, I picked up a copy of the student newspaper, The Daily Gamecock which had a less than positive review.
Anyway, I mention Tios because it has moved from Main Street at the base of the Capitol to Sumter