By the way, since the health of the performers is so paramount, may I suggest that the performers onstage also wear masks? Sure, that might make watching the show less enjoyable, but as audience members can't we make this tiny sacrifice for the sake of the performers health? Or don't you all care?
The performers are all tested for Covid before they set foot onstage. If a performer tests positive—thus posing a risk to audience members as well as fellow performers—they are sent home. I'm guessing you are one of those who would scream bloody murder if theatres demanded that audiences follow the same procedure as a condition of attending unmasked.