We have been organizing free Murder Mystery parties for our community at our home. I am trying to learn how to best organize them so they are fun, easy flowing, keeps everyone involved, and limits the number of cancellations. I am worried that since the tickets are free that it encourage the feeling of lower commitment. When we had groups of tickets being reserved by one person, we saw a larger number of those attendees cancel at the last minute. So, we figured out that we needed to limit the number of tickets people can reserve to only 3. So far this really seems to help lower the cancellation rate.