The snorkeling is great. We saw dozens of different types of fish. The turtles came right up to you, and there was a cool section of beach near the cottages where there were urchins all over.
Quick Tips: Hanalei has stores, snorkel rentals, bike rentals, small restaurants, shopping, and gift shops. The ABC store in Kapaa is a good place for cheap gifts. There is also a farmers market every Tuesday just out of Hanalie, which is a great place to try fresh grown fruit.
Best Way To Get Around: Near the Hale Makai Cottages, it's easiest just to walk if you just want to hang out by the beach. Otherwise, you need to rent a car to get around the island.