I purchased my tickets from Viator and wasn't aware of the actual tour company until I called to reconfirm my trip 24 hours prior as instructed. They advised me that I was to be picked up at my hotel at 6:15am and I'm pleased to report they were on time. The driver informed us we were to be driven to a terminal, checked in, and boarded on a different bus bound for our trip to the west rim. Once at check in, we were surprised with a $10 processing fee per person, something noted in the fine print at Viator but not mentioned outright.
After check in, we boarded the bus driven by Mase bound for the west rim. He was very informative during the entire trip and we were kept apprised of everything coming up as well as the process involved. He did grow slightly impatient with a few tourists who failed to adhere to instructions about returning on time and rightly so. Some of us have better things to do than to wait on late tourists jeopardizing our return time.
Mase provided us with sufficient time to fulfill all our needs at the Hoover Dam and Grand Canyon West Rim. All in all, this was great tour that I would recommend. Although, I can't give 5 stars due to the surprise $10/person processing fee.