What a horrible horrible tour to Hoover Dam. We were sweating on the bus while we were waiting and they kept on telling us they would eventually turn on the engine/the air, even though there was no reason to have it off. They made me give my credit card details verbally on the phone in front of everyone else on the tour. This has to be illegal. They appointed our very nice, but very incompetent driver to lead the tour. They told us we would be back by 2 or 2:30 and we got back at 4:15, and there was no traffic or rationale. What a waste of money and incredibly unprofessional.