Glad we did this, for the sake of learning each mountain top name, and history, and to get the layout of the town. We learned that rattlesnake and cactus were served at the first restaurant in Sedona: "Cowboy Club", which we wouldn't have know about otherwise, and that was where we stopped for lunch after the tour.
They greeted us with cold water and cookies when we reboarded the bus after making a stop to take photos, which was a very nice touch.
The tour guide seemed to put on an exaggerated tour guide accent/tone(?) the whole time.... Which was a little odd (distinct from a regional accent), but she had interesting facts for us. Based on the other reviews, I thought we would learn more Native American history and stories, but really, she made just a few mentions here or there.