5 days vacation, and no $$ where to go?

I have the CWA shortened vacation, and paycheck coming up. As many know it is only three vacation days with my two days off. I promised my Father I would spend it with him. He is from way up North and would like to stay away from snow. We are also not the athletic types.
Charleston South Carolina....great city with a lot of history. The Battery, Civil War Forts, the Hunley(if you can get a ticket for that) and Fort Dorchester a fort from the late 1700s. Nice eaterys, good microbrews and you can take a carriage ride around the city. Worthwhile IMO.