Say “Mālō e lelei (hello)” to the Kingdom of Tonga. Sugary beaches and pristine reefs fringe Tonga’s 176 islands; Holland America Line cruises to Vava’u, where you can fish for marlin and mahi-mahi, go snorkeling in Swallows Cave, and admire rare flora at the Ene’io Botanic Garden. Holland America Line also calls in Nuku’alofa for the chance to visit Captain Cook’s landing sight, the Ha’amonga ‘a Maui trilithon — Tonga’s own Stonehenge — and the Mapu’a Vaea blowholes, aka the “Chief’s Whistles.”