Beyond that I would ask you what you mean by "somewhat safely."  That's a vague term.

If you wanna play then assume the risks, fully.  Maybe some degree of mitigation by avoiding high traffic areas, choosing a provider whom mandates temp checks, shower prior - but make no mistake you are still at risk.   In an intimate setting, wearing a mask, sorry I just don't see how it has any difference.   I guess if it makes everyone feel better.  

Im not wearing a mask in session unless its mine or her fetish  Seriously, do we think that makes some difference?

Way I see it, regardless of what we do, we have a risk even at the local holiday counter.

There really isn’t anything you can do to keep your risk at a minimum except for opting to not see anyone.  I have seen several providers state they would rather have one extended booking for the week than two or three shorter engagements. Take from that what you will (re: maybe do an extended booking).  

 
I assume the best of my colleagues and I imagine we are all taking every precaution necessary, especially colleagues where this is their full time job. As others have said before, limit your exposure prior to the engagement, get a COVID test, take a shower upon arrival and really wash your hands. Keep the provider apprised if you develop symptoms after the date.  

 
Also, I’m a bit confused by “several appointments ahead of me”. Does this mean the same day or that week or over the course of two weeks? Context would be helpful here.

I have seen a few gals that recovered and as a result likely have some level of immunity. The ones that post a ton and have been very active the whole time have already likely had it by now. Who knows they may be the safest ones at this point.