“and nothing was noticed as a 64YO guy pulled the guns and ammo up to his room???”
I was a competitor in a match at a range near Vegas. I hauled all my gear and ammo to my room, I’m not going to leave it in the truck. Nobody said anything. When I looked around there was an M60 link under a chair.
When SOF had their big gun show at the Sands there were long guns in most of the rooms, I guess.
Back when I first obtained a Nevada carry permit, a person was required to qualify on the range with every weapon that they intended to carry. Since at the time I had never carried before, I had no real idea which of the seven handguns I owned at the time would be best to carry. So, I qualified with all of them and the make and model of each of them appeared on the back of my permit.
I stayed at a casino in Reno on the weekend that I qualified. Nobody took any notice of me carrying a fairly large hard-sided Winchester gun case up to my room.
As others wondered about, I made use of the "Do Not Disturb" sign to keep the maid out of my room during the entire stay. The last thing any gun owner would want to do is to lose track of a firearm.