Trouble saving
I've only been going to one place (R&T) in Delaware now (going to Philadelphia occasionally now that BW and others are shut down).
I actually did not even offer an upgrade tip, the masseuse doesn't like the masks either. The offsite manager thinks masks and boosters are safer, so the mask is on in the lobby with the camera, but she can remove it in the room.
In fairness, I have seen her for quite a few years, so she knows I approve and will not complain to the manager or the other masseuse.
I'd say just ask, I expect it will vary by establishment and provider.