I'm suspecting that weather had a great deal to do with it. They were certainly asking us a lot of questions about what weather was normal, how predictable it was, that sort of thing.

They've probably also gotten the feedback surveys at least partially analyzed by now, and my impression was that a lot of the people walking (not all, by any means, but certainly a good percentage) were extremely frustrated by the way the evacuation plan was enacted. If they were sufficiently put off to say 'No, I don't want to participate again,' then the organizers may reckon that there won't be enough support to pull another one off in KC. Word-of-mouth advertizing is critical, and negative word of mouth goes faster and futher than positive.