A good friend who lived in Hawaii for some time suggested that on Kauai I do these tours, just looking with whom to book and how far in advance you think?
1. Sail Boat/snorkel cruise the Nepali Coast
2. Go tubing on top of the mountain
3. Zip line ( think I'm going to use backcountry they look the best)
4. Waimea Canyons
5. Snorkel off the beach in Hanalei