I am sure the casino will not let people get infect of the virus, and they will do everything to prevent because that is related to their reputations among the other casino. Before people can enter the casino, they need to pass the physical check in the front door of the casino, and only people who healthy and clean can enter the casino. People can not be filing a case on a casino if the casino can follow the protocols, and they work hard to make their place clean, so people need to have something that can prove them clean and healthy.
That is true, most casinos would do their best to be able to operate and I doubt they can even start operating without passing a certain standard in regards to safety protocol for disinfecting and assuring social distancing in their casinos.
Here in our country, once a new case arises travel history and contact tracing is done and establishments are closed down for sanitizing once an individual was traced in a certain establishment.
If we talk about travel history in here, and I see that the number of people who get infected increases. But I don't know who the carrier because the traveler came from many countries and cities, so I think one or more of them can pass the physical checking in the destination city. But I see that in all places, whether in public or another place, the management or officers still warn people not to close each other and have distance between them. It seems they start to strict with their rule because the big infection can come anytime.