Both of the state parks here are very nice and well maintained. My husband is partial to Huntington Beach and I prefer Myrtle Beach SP. There are some private campgrounds with all the bells and whistles. In Surfside beach, between Myrtle Beach and Murrells Inlet is Ocean Lakes. It is the southern most ocean front resort in a stretch of campgrounds south of Myrtle Beach State Park. At the north end, close to North Myrtle Beach is Myrtle Beach Travel Park. In the heart of Myrtle Beach is a KOA camp ground. It is not ocean front, but easy access.
We retired to Murrells Inlet 20 years ago, we live less than 1/2 mile as the crow flies to the ocean front. It is a terrific area for an easy laid back life style. Yes, Myrtle Beach is a congested nightmare during the summer. that is why most of us stay away from certain areas. Just as locals who live near a big city know when to avoid going into town.
Horry County is one of the largest counties east of the Mississippi River. We offer an amazing variety of lifestyles. Live near the ocean, on a golf course, or on the intercoastal waterway boating enthusiasts. My work is fascinating just from the variety of homes and communities in my county and in Georgetown county just to the south. I'll take our traffic any day over the traffic in Charleston.
For our friends on the boards insulting my chosen home, most folks who say they are moving to MB actually mean the area around. Just as anyone moving to Cleveland is not actually moving to the city of Cleveland.
If you have ideas about different areas, you can pm and I will give you any info you might need.