Our guide, Christian, was fantastic. Had a ton of knowledge about Hawaii and Kauai, and even brought his ukulele to play music as we hiked!! Beautiful and easy river to Kayak on, and the hike to the waterfall was fairly easy, even us non-hikers. Getting to swim under the waterfall was amazing, but chilly! Gives you a nice rush of adrenaline. If you're looking for something to do for a few hours, do this. I would recommend doing the morning session. It's early, but worth it as there isn't anyone on the river going to the hiking portion.