I found Cheryl's evaluation to be concise and informative and I think you will too!
I found some of the comments VERY interesting:
When I last asked the committee, I was told D3’s warm body count was about 3700, including day/kids, but we’ll get the final figures in due course.
I was asked about Denvention’s low numbers by a few people. I found it useful to start with Mark Olson’s rule of thumb about where Worldcon members come from:
- the regulars who attend most Worldcons, regardless of location (and who usually participate in the Hugos and site selection)
- travelling fans within a day’s drive
- local fans
That model predicts that Worldcons in cities with small catchment areas and few population centres within a day’s drive (or equivalent in Europe) will tend to have a lower membership total, and vice versa. I suspect there is some truth in that model, and comparing the city and metropolitan populations of Denver with Chicago/Boston/LA seem to show some correlation. Of course there will be other factors such as how well the committee engage with local fan groups, students etc.