I took this tour and it far exceeded my expectations, Kay was extremely knowledgeable and very accommodating. He prepared freshly baked snacks in the morning, and professionally prepared a Maui Gold pineapple that was as advertised. I suggest skipping coffee and and limit your liquid intake as there are few bathrooms along the way, but if you're comfortable being one with nature then this isn't an issue.
Ride: nice spacious van, Kay would periodically check in on us to see if the inside temp was OK, road was rough and if you get carsick easily prepare accordingly, Kay is an experienced driver and it shows. He was full of knowledge and many tidbits of information throughout the whole trip
Food: Water, Juice, Fresh Fruit, Baked Goods were all provided and readily available to anyone that wanted any. The local eatery was delicious and very accommodating to our vegetarian travel buddy
Sights: can't say enough about how beautiful the road to Hana was, we had plenty of stops and got so many beautiful pictures, from the waterfalls to the black sand beach it was visually stunning from beginning to end.
Overall: we were exhausted at the end but loved every minute, it was definitely a long drive but would highly recommend it to all our friends!