Tybee Island, St, Simon's Island, Hilton Head or Kiawah Island?
 

We are in search of a beach vacation that is not in a very commercialized area, but has a decent nightlife for a couple in their early thirties, any advice?

Damn, we are in our early sixties, but St. Simons surley is nice, good nigtlife in the village and other places on weekends.