Looking for a Beach

We are from the Pittsburgh area and we travel down to Myrtle Beach South Carolina every summer for 2 weeks. We have one child who is 7 now and we have went every year since she was 9 months old. It is a longer drive but camping 50 steps from the ocean is well worth it. In Ocean City there are 2 campgrounds just south of there fort wilderness and Castaways. We personally haven't been to OC with a trailer and would for a long weekend as we thought about it many times just getting reservations last minute for a weekend is tough. The drive to OC would be cake compared to the drive to Myrtle but we love it down south and will continue to go every year we can. If you have any more questions tips or advise I could help with ask away! :)