I have not played at Harbor Town, but across the Calibogue Sound is an island named Daufuski. You might see it in some of the TV shots from 18 green looking back at the fairway = There are always a few pleasure craft in camera view and behind these craft a couple of miles away is Daufuski Island. Te island has three courses - I've played at Melrose, formerly a vacation club - very nice accommodations and a course designed by Jack Nicklaus - lots of fun..Two other courses and communities on the island - Haig Point (private course and, I think, thought to be the best of the three courses on the island, and Bloody Point, another challenging private course.
I've heard that the name of the island came from the local patois of inhabitants way be when (1800s?) who called the island "The first key" , the first of s string of barrier islands or "keys" that front the South Carolina and Georgia coast line. Melrose is open to the public - You take a ferry to get there.