"haven't noticed any mention of how we're selling tickets Friday night. Is another fan group or the Arisia staff handling that?"
I'm going to figure that out on Friday. We'll be collecting for photos with Jabba too, so I'm figuring we'll have a small table at the corner of the stage in the ballroom to do all of that.

Whoever is at the fan table on Saturday will be selling them.

More details on the forums :)