They'll pay you to wear a mask!
https://www.yahoo.com/news/las-vegas...210733720.html

Wearing a mask inside a Caesars Entertainment casino?

Someone from the company may tap you on the shoulder and slip you $20 to gamble.

The operator of five reopened hotel-casinos on The Strip has launched the promotion to encourage guests to wear masks and prevent the spread of COVID-19.

Over the weekend, a promotions team walked through Caesars Palace, Paris, Flamingo, The Linq and Harrah's to find people wearing masks while gambling or strolling the casino floor. All told, 375 guests got $7,500.

At first I thought this was about paying the people without masks $20. to put one on, but no, it's about positive reinforcement - getting paid to wear one.