Posted elsewhere
... but relevant in this thread too.

What will make a difference
... is MLs being in recovered status.
Which means they've had the virus but are now recovered and considered immune.
They can't transfer the virus to others
... in theory, but maybe shower to be sure.
... plus massage bed has disposable cover to get rid of and changed.
Overall shop cleanliness would still be important.

Better still, if you are recovered.
Good to go.