FWIW here is one article regarding recent Las Vegas Casino policies on guns.
https://www.lasvegasadvisor.com/question/guns-casinos/
Well, at least one casino in Reno has moving screening set ups with metal detectors. And the security cams and operators are pretty good. A friend was choking while eating in a restaurant and security popped up within about 30 seconds. Security had spotted it on camera. I dropped my wallet and did not notice my cash pop out until about ten minutes later. Security reviewed the video in the time frame i gave them thinking it had been stolen and the video showed something popping out. But not who picked it up.
Thanks for that. I find it confusing that it was on SHOT SHOW, the biggest gun show in the world.