We are planning a summer trip with my ds (5) and my dd(7). We have a 4 day package at a resort in myrtle beach. We have jet blue miles so figured we would fly to charleston and then drive to myrtle beach. Question is should we try and stay more then 4 days in myrtle beach and if so where can we stay just for a night or two or should we do stuff for another day or two around charleston. I have been to charleston but don't recall if there is much for kids there.

Thanks