Yes, some of us will be there. If you look around you'll find the thread I posted about buying free beer for AR15.comers that can meet up with me on Friday.
As for having a rifle in a casino, yeah, it's way cool. 2 quick funny stories: one show, on the way in, I was carrying a slung MAC10 and my cousin was wearing an unloaded gun in a holster, both for sale. The security gaurd (casino ninja) stopped us and said that he'd have to put his handgun in a bag. He had no problem with the "assault weapon", the gun on the hip made people nervous.
At the last show a friend of mine picked up an HK SP89. While walking out through the casino, the sling came loose and his MP5 looking gun hit the casino floor with a thud and a crack! Holy Shit was that akward and frickin funny!