Well, it took decades, and hopefully this is a trend, but non-smokers finally have a 100% non smoking floor in a major Las Vegas casino.
Park MGM is trying this and hopefully it lasts. The 100% non-smoking trend continues to expand nationally in the USA.
https://parkmgm.mgmresorts.com/en/hotel/smoke-free.html
List of all USA non-smoking casino floors:
https://www.gamingdirectory.com/smokefree/properties/