I am a concierge on Kauai and took my brother-in-law out with Kayak Adventures last week. I was thoroughly impressed and can't believe I waited so long to do this activity. The Wailua River area is spectacularly beautiful and peaceful. The kayaking is easy and accessible for all ages. The hike through the rainforest is fun, educational and not difficult. THEN, you get to the waterfall! What a beautiful spot for lunch and swimming! There were other tour groups there, but, it did not seem crowded and when my brother and I got into the water, we were the only ones in the water at that time! To top it all off, our guide, Aaron, was phenominal!!! His knowledge of the area, flora, fauna, history, legend and culture truly made an impact on both of us. I highly recommend this tour of the Wailur River area to all ages. I also have to say that Adam in reservations is outstanding, accomodating, friendly a pleasure to work with on booking this trip.