I worked for months to schedule a Just Ducky Tour with fix friends. I made a reservation for a Sunday at 6 p.m. which was confirmed that morning. At 3:50 p.m. they called and cancelled the tour because they didn't have enough people to go. The person I spoke to admitted that they needed 15 people to break even so they felt it was better to inconvenience us than run the boat. They offered me the 4:30 tour instead but since they called so late, I couldn't get there in time as the Parkway East was closed for the weekend. With more notice, it could have been done.
I wrote them a letter explaining the situation in detail. I also requested my money back for the gift certificate that I had been given since this left such a bad taste in my mouth. I don't want to go through this again. it has been a week and I haven't heard anything back from them.
Bottom line - be prepared for them to cancel if you're not scheduled for a popular time!