We were fortunate to be able to book this tour only 1 day in advance. We were unsure whether to book a tour or attempt to drive the road ourselves. Wow, we are so glad we decided to take the tour. Gardel (Dell) was our guide and expertly navigated the narrow winding road. Like several other reviewers have mentioned, Dell is a fantastic guide, sharing tons of fun facts and bad jokes the whole trip! We got to see all the highlights of the trip early before all the people arrived, which felt much more special because it was less crowded. In addition, instead of turning around in Hana and driving back the same way, Dell kept going and took us to several more spots on the backside of the island. If you book this tour, ask for Dell as your guide!