Was there last year at this time. Best beach area is around Blue Chairs Resort and Green Chairs Resort, and south along that beach to the rocks. The beach is not very thong-friendly. I asked a swimsuit merchant and he said OK to wear a thong as long as you are laying on a beach towel or sitting in a beach chaise, but not considered appropriate to walk along the beach in a thong. But not to worry, lots of guys in bikinis. I wore my Joe Snyder Enhanced bikini, had a GOOD time!!!
One word of caution...keep an eye on your personal belongs while at the beach. My beach bag was stolen. But still had a great time. Enjoy.