I am a paying vendor at Subiefest.
http://www.subiefest.com/sponsors
I was not a paying Subiefest vendor last year. I learned the hard way. Just passing on teh info. Dont want to see people lose their entrance fee, I dont see an issue with it personally, but not sure how security or the promoters will see it. They have already posted warnings about passing out anything without being a vendor.