We were given a 4:30 reservation for the day we arrived in Charleston. We had read good reviews of the tour and hoped doing this tour on our first day would allow us to make better plans for our stay. You can imagine our disappointment and frustration when we went to board the bus and were told that unless 4 more people signed up in the next half hour, they would cancel the tour. When the inconvenience and complete disregard for the consequences to us were pointed out, we were told that gas was expensive. We obtained a refund and enjoyed a Grey Line tour the next day. It would have been good to know ahead of time that cancellation was a possibility but I did not see it anywhere on their web site.