Na 'Aina Kai Botanical Garden, Kilauea, Kauai (naainakai.org, 808-828-0575). The grounds surrounding Na 'Aina Kai (which translates into "lands by the sea") feature prime examples of iconic Hawaiian scenery -- a waterfall-fed lagoon, pristine beaches, and a teak-and-mahogany forest. This once-private 240-acre estate feels isolated in the best kind of way. Your guests will have plenty of space to roam, explore, and view the 90 bronze sculptures that are sprinkled throughout the property.
Also Consider: Joining residents (Pierce Brosnan is one) to satisfy your sweet tooth at Kilauea Bakery. The fresh-baked goodies, such as coconut-cream eclairs and guava sourdough, offer delicious favor options. For a seafood-rich welcome dinner, bring guests to Hanalei Dolphin Restaurant, west of Kilauea on the Hanalei River. Its chefs are known for their fresh, inventive sushi. Or, to stock up on supplies for a cookout on the water, visit the fish market out back (hanaleidolphin.com). As a keepsake, purchase a Niihau shell lei. The art of stringing tiny shells into a necklace has been perfected by generations on the island of Niihau. Find beautiful examples, as well as hand-crafted koa bowls, at the Kauai Museum (kauaimuseum.org).