Our concierge booked this tour to the hoover dam for us. The driver was prompt and friendly and introduced all the other guests..10 of us in total. Only made 3 stops to collect everyone. Glad we were on this tour BC our guide was very knowledgeable, other random tourists stopped to listen to him! Free bottled water and he had the van ready for us when it was time to leave. Big buses couldn't park as close. Left hotel around 8, returned by 12. Would recommend!!