Mars Society conference: any advice?

Day after tomorrow I head off to lovely Dayton, Ohio for the Mars Society's annual conference, where I'm an invited speaker. I've never attended this conference before, nor have I ever visited Dayton. The only person I'm sure will be there whom I know is Geoffrey Landis. Anyone within the sound of my blog going to attend, or know someone who is, or have advice to offer about the conference or the city?