Downtown Charleston is fantastic! Don't miss your opportunity to enjoy it. Go find a bag of boiled peanuts, hunker down on a park bench somewhere, preferably on Market Street since it's Charleston-iconic, and enjoy. Go try the restaurant FIG. Also, if you're a Stephen Colbert fan, go try the restaurant Sticky Fingers. I believe their flagship location has the old portrait of Stephen Colbert that hung over the fireplace on Colbert Report (the two layer version, the current one on the show is the three layer version).