Guys, keep in mind that you're going to be spending a LOT of time in St. Louis City.
It is NOT a gun friendly environment. If you get made/grabbed by po-po, they're very likely to confiscate your carry piece "until they confirm it is not a crime gun." Your out of state permits are GOOD here, but the city police aren't too down with that.
Also, the area around the convention center at night is not the world's greatest. If anyone has questions, PM me, and I can point you toward some nice places to eat, etc...