Really enjoyed this tour. You get to stop at several beautiful locations throughout the day. The driver, Jorge was knowledgeable and provided great information/history of the island and the Road to Hana. My only complaint is that we had to sit in the very back of the van, there are windows on both sides, however these seats don't allow individuals in these seats to have the full view. Our van also had a very young child on board which caused some uncomfortable times during the trip.
Lunch provided was "ok", not sure there is much one can do about this.
This is almost an all-day event, you can get into the water at a couple of stops, so having a towel is also handy.
I would recommend going on a tour like this if it is your first time in Maui, we had a rental car and drove it on our own later in our stay after seeing/learning what the tour guide shared with us.