This is part of the red flag laws they are pushing
@Thomas51, I’m not familiar with FL law, is that the law right now? In MO, we can sell to other MO residents with no background check, but the common etiquette at the show is to do those sales in the packing lot, unless you’re selling to a vendor.
That sign has been the norm for a couple decades in VA. There was also a point where the State Police would hem you up (trespassing with a firearm I think was the charge resulting in the charge and confiscation of the weapon) if you tried to sell in the parking lot (as you were still on the property). That said the Denny’s up the street had a lot of traffic during a show.