Every gun show I have ever been to allows you to carry a weapon inside as long as it is not loaded. And that goes back to the seventies when I first started going. I always remove the magazine and lock the slide open before I go in. That way I know the person at the table cannot shoot anyone. And that person at the table can see it's safe to handle as soon as I unholster it it. I've had them ask about the magazine. And I' had them ask about rounds for the weapon. I always answer no.
This. Put the mag and extra round in your pocket and mums the word on them.
Or don't even **** with it and keep it concealed. Remember what Uncle Kirk says. Every time you load or unload [STRIKE]god kills a kitten[/STRIKE]....errr there is a chance for an ND.