Look what’s going on inside this casino. Some visitors wear masks but the most ( in the background) don’t have it on the faces. And that’s when scientists warn of the danger of airborne viral particles wandering around.
If that is happening in the casino, and the staff in the casino is not telling them to wear a mask, that will be too risky to the gamblers if they come to the casino because we don't know who is healthy, who is the carrier, who is the asymptomatic people. After all, they gather in one big room. The chance to see a new infection among those people will be big because they don't wear a mask. But I hope the casino can use the other protocols such as scan the people's temperature before they enter that place, and tell them to have social distancing between the other. But it is better to suggest the people wear a mask without any exception still.