Huntington Beach State Park in South Carolina has some FHU and the rest water and electric. It varies how far from the beach depending on your site. The closet site might be a 2 minute walk.They have some good ranger programs. Assateague State and National Park you're just over the dunes.The State Park has one loop with electric. The NP has no hookups. We enjoyed Assategeaue because of the wild horse which come into your site and because of the ranger programs. In the Florida Keys Curry Hammock State park has sites on the water with water and electric. Cape Hatteras National Park has some sites close to the beach but no hookups.Most of these places you need to get your reservations in way ahead of time. But I'll give you a tip. Sometimes you can still get in if you don't want a weekend. Try looking at a Sunday through Thursday. Or splitting your time between 2 sites if you can't find a whole week in one site.