It can take an hour and a half to get to that area driving, or more. You can get there in a boat in a little over an hour, while drinking a beer if you like.
We took a trip to Murrell's Inlet back in February. Almost everything is closed then...but, a few places you can eat without fighting the tourist crowd. 'bout an hour and a half there...'bout an hour back. All on the tri-toon. GREAT afternoon.