I lived there almost two years, seldom went to the beach, and there was no shopping (unless you wanted to visit the Sears catalog store). Shows? The drive-in movie, the theater on base, and sometimes something at the Pavilion in season.
So what did we do if we didn't go to the beach? Weekends I wasn't on duty roster, we drove to Florence, Charlotte, or Wilmington for shopping, Charleston and Wilmington as tourists, and visited the historic small towns in the northeastern counties of S. Carolina, southeastern counties of N. Carolina. Places like Lumberton, Whiteville, Mullins, Marion, Kingstree, Andrews, Georgetown, Dillon, Conway. Each had their own attractions, I'd find them when out running cases, but wouldn't have time to visit while working.
If you don't care for local history, there is always golf. I have relatives that would go to MB (or the Sea Islands alternate years) for a week at a time and do nothing except golf. MB has developed into one of our biggest golf tourism areas.