We loved the half-day tour. Travis was super friendly and a pleasure to spend the afternoon with. We saw Canyonlands in a manner we couldn't have without the 4-wheel drive. My complaint lies with Viator, NOT the company who took us into Canyonlands. I called Viator to change the reservation to 8:00 a.m. The operator said that it wasn't available. When I asked the name of the company to get questions answered that the operator couldn't answer, suddenly there was an 8:00 a.m. opening. I had my doubts. I went to the company upon arrival in Moab and, sure enough, they had received no booking change. We took the 1:00 tour. It was 107, but the vehicle had AC. Of course, it's not frigid cold because you're driving slowly and looking around. I have zero complaints and only praise for NavTec. They answered all of my questions when I checked in with them, which Viator couldn't do. I would not use Viator again. I highly recommend NavTec, however.