How Covid testing is affecting new sits

Hello:

I am new to THS and in the US. One of my houses I would like to sit for asked if I had the vaccine yet. I did answer honestly as I do not and am scheduled for the first one next week. But my questions are:

Have home owners asked to see the vaccine card during the interview?
Did they ask you for it on site?
Were they vaccinated too?

Either way there are many sits available for either vaccinated or not but I was just wondering how others have been asked or turned away.

Some listings ask for sitters to be vaccinated, however this sitting listing did not and asked after my initial e mail which is fine but I would think they would list that as a requirement on the listing, no?

Anyone else’s experiences?

I am not seeking any political arguments, just would like to know your experiences. TIA