The number of allowed people is surely implemented but I don't think to have the tests result as a requirement will be imposed. Not all people are encouraged to undergo the Swab test unless they feel the symptoms, to save supplies and cost. And for the cost, people are the ones paying for it so I doubt they will undergo that just for the purpose to play on casinos.
I'm with that idea honestly to ensure every gambler is cleared from the virus. However, that kind of requirement might discourage gamblers to play there since it's too much for a hassle especially on a healthy person. But hopefully, it will be considered for the sake of all people there, not just for gamblers, but for casino staff as well.
Its too hassle for most cases but this is much more better rather than just simply relying on thermal scanners and alcohol because we wont know if that person is just not showing off any symptoms
and this is why i do still consider on going to these places due to that fact and even going outside as simple as walking in the streets will really give out that risk of exposure to someone that had some virus.
Yes, this is hassle but i dont think that casinos will implement such protocol to ensure out peoples safety into the establishment.
How much would be the cost for every swab test? I think these people who can afford to go in a casino can also afford to pay for the cost, this is for the safety of people inside the casinos, so it doesn't matter if it's costly as stopping the casino operations just because a carrier has entered the place and infected the people inside is even more costly.
Also there is much more faster rapid test kid that can give out results 10-15 minutes which is more less painful since it do only require some sample blood.
I dont know if this one is accurate though.
http://www.ringbio.com/products/covid-19-total-antibody-rapid-test-kit