NP, I can definitely understand your uncertainty over this.

Not sure if this will help, but I have met therapists outside the office before. With ex-MC, H and I met him once at a coffee shop across the street for a session (he often meets clients there). It felt OK to me (though, admittedly, this was before the transference really developed for me).

Then, during the pandemic, I met Dr. T outside the same coffee shop, at their outdoor tables, a few times. I admit the first time did feel a bit more friend-like and a bit awkward (I think it was also the first time I saw him wearing shorts, which was a bit weird, too.) But it was nice seeing him in person. It felt much less weird the other few times we met outside. And it just felt normal when we eventually transitioned back to his office--it's not like meeting outside those few times changed our relationship in the long-term, if that makes sense.

Another thought:.I assume he still knows other people in your area. Is there any way he could borrow a colleague's office for a session to meet with you? Or maybe even not a therapy colleague, but just someone who has a private office even if they're, I don't know, a CPA, say. Especially if it might be on a weekend, they could be open to it. There are also places where offices can be rented by the day or hour. And some libraries, community centers, etc. have rooms that you could use, maybe for free (libraries) if you reserve them. I wonder if something like that might feel more comfortable for you than a cafe or park? If it's more of a professional space?

I'd hate for you to miss out on being able to see him in person one last time if you feel you want to do that. But I also get your not wanting to end things on an awkward note. Maybe he could give you the option to meet one more time virtually after that if you want? So I'd take some time to think about it, maybe email him in more detail about your concerns, see if he has any other ideas.