Overall my family and I had a great experience with our tour guide, Maui. He was accommodating, willing to work with us on our timing and when we needed a break out of the car.
Highlight of our tour was with Heath, a resident of Leilani Estates. We were saw the affects of the 2018 volcano eruption. Heath walked us through his property where he has left most of his home and articles the way it was after the devastation. It was amazing to see and could only imagine the how the lost was/is for him and his family. Heath was in process of updating and adding space to the home he purchased and lost everything but his family and the clothes they were wearing. We saw tiles stacked, brand new lawn mower and table saws, etc., burned to the ground.
The reason for the 4/5 rating is for the long tour and all that was provided was bananas and water. I think an improvement to this tour would be to offer a picnic lunch, sandwich, chips, fruit and drinks with a place with a nice view to eat a lunch. Maui offered to give is time to stop for lunch but I packed a lunch. We ended up eating in the vehicle due rain.
6 hours is good for this trip. There is as lot to see and take in during this tour. I recommend to be flexible with the itinerary of the tour due to the weather on the east side of the Big Island.