My mom and step-dad bought a patio home on Oak Island a couple of years ago as a vacation home and they really love it. When I go to visit, I notice on one of the local channels, they are always showing lots of things going on. My mom even commented on the fact that for such a small place, things are always happening. I don't think you're going to have any problems finding ways to meet people. It seems very friendly and I think if you're open to meeting others and getting out there, the rest just falls into place, you know what I mean?
Also, my step-dad is a photographer in Durham where they currently live and he joined the Chamber of Commerce for the county (Brunswick, I think). I know that he's already been involved with some of their functions. I think you're going to have a great time.
Good luck!
Nicole