Masks are no longer required in the Tahoe area, including both California and Nevada, for people who are fully vaccinated against COVID (with the exception of when on public transit, in a healthcare setting or while indoors at a child- or youth-oriented environment). Being fully vaccinated means that it has been at least two weeks since a person has had the final dose in their respective vaccination series. Masks are still required for people who are not vaccinated when they are indoors in public. Businesses, including casinos, are now allowed to operate at 100% of capacity with no social-distancing requirements.
Please note, however, that businesses may still impose stricter guidelines for their customers than those that are in effect among the general public at large, such as requiring that masks be worn by all people on the premises or that social-distancing guidelines be observed.