Casinos can only open at 50 percent capacity and will need to limit the number of people allowed inside. Steve Sisolak closed nonessential businesses - including dine-in restaurants, bars, and casinos - in Nevada on March 17 to prevent the spread of COVID-19, the questions have been: when will restaurants and casinos reopen and what will they look like?Ĭasinos officially reopened on June 4 with restrictions.