James Island State Park
We were there a month or so ago. We were not there long enough! We have plans to go back. It's a big place and dog friendly too. What's nice is that it's really close to some fabulous shopping in dntn Charleston. We arrived late- well after dark and they were very accommodating. If you have a big class A coach, getting in (and there's only one way) is a bit dicey- lots of trees with branches that seem a lot lower than they ought to be.