The Crossroads of the Aether
I am sorry Greene, I have heard several horror stories from that event, and I could say I am shocked, but I know of another event who told performers as they were arriving that they would not be getting what they wanted. In your case I am glad you at least got something, since some groups didn't even get a deposit. From what I have heard, they are not planning another as the company who ran the event has been dissolved, making this a legal issue, since everyone will be going after the owners for funds, and contracts that were not honored. I have mentioned this to one of the other groups, but you should form a class action suit against them.
As for Dickens on the Strand, yes it is a wonderful event, but getting in can be difficult, especially on your first time. They have a long process to get in and we found out we were doing it two weeks before the event.