HOLLY CRAP thats a lot of cash!!!!!
No wonder your going to Kauai!!!!!!
Enjoy Kauai been there many a times. Rent a canoe and paddle up the Waiama river to the fern grotto if you want to spend a 1/2 day that is. If not drive up to Waiama canyon to the end. Once at the end of the road cross the concrete river and start up the trails. Oh yah, Need 4 wheel drive,lunch, water,rain gear,tell someone your going,towels,and enough stuff in case you get caught in a rain storm. It its rainingn hard DON'T drive just wait till its over then go have fun.. If you follow the other tracks they will lead you to many a water falls and a few hot spring with natural pools.
Rick