They eliminated all of the no weapons signs there afaik.... ask TheSzerdi, he worked there last year and may have more info. They zip tie your weapons if they see them, and even then they occasionally miss weapons.
Keep in mind, the Gibraltar trade center gun show does the same thing. Yes, its incredibly stupid, but the fair has gone from no weapons to this, which is at least a step in the right direction.
Personally, I don't carry there. I go there dressed in full costume, consume the medieval alcoholic breverages in copious amounts, and have a good time. If I need to defend myself, I have a fully functional cutlass on my hip, and a zip tie ain't gonna stop me from drawing either that or my boot knife which can't be peacebound.