Soak up the sun and some Vietnamese culture on Phu Quoc Island, where white sands and tropical waters entice beachgoers from all over the globe. Snorkeling, scuba diving and fishing are the most popular water sports here, though jet-skiing, wind sailing and squid fishing—yes, squid fishing—are also at your vacationing fingertips. Check out the early-morning Duong Dong Market for an authentic local experience.