Let me say that I enjoyed the tour. I learned a lot about the city of Chattanooga. The reason I gave it such a low rating was because the owner decided to move our 7:45 pm sunset tour to 9:30. We did not receive an email or a phone call, he came by in the bus and told us that he was behind schedule. On the website, there was only one tour available for Friday night, but yet he was in the middle of a tour when he came by to tell us he was changing the tour time. Basically someone booked a private tour and he saw the money he was going to make. To make it up to us, he provided everyone on the bus (21 or older) free beer. Clearly, he has done this before. You don't just happen to have three cases of beer. Honestly, that is the only thing that kept me from giving this tour a higher rating.
I would not do the tour again or suggest it to others. To me, it just shows a lack of professionalism. I understand as a business owner you want to make as much money as possible and you never want to turn people away, but being considerate to those who are giving you the money is just common courtesy.