Being a genuine noob to Fanime (and cons in general), I have a few questions about the swap meet.

1.) How does it exactly go on? Like.. Do you sign up for it, and then get assigned to a table/half a table type process.. Or is it something like a big room where people claim their territory and lay out the things they're selling?
And 2.)
I've heard of people selling Wii's, and other things that aren't directly Anime/Video game related (Wait. Nevermind. Wii's are kind of.) But just to make sure, would things like mp3 players and rollerblade type things be sold? Or is that just too much like a garage sale? :/ (Two random things.. But things along those lines.)
Thanks for reading my noob questions.