Wips, I don't think anyone would be expecting professional advice - thousands of people on MN offer advice all day long, we all know that (most of) it is not 'expert' advice.
The thing that has struck me, and the immediate concern I have, is that there are people who are so entrenched in their situation that they can't see the wood for the trees. They have literally nobody other than their partner (if they have one).
If you are feeling at rock bottom with nobody to talk to, the thought of foisting yourself on some jolly, unsuspecting MN group meet up (for example) is just overwhelming. For me, this was about a place where you could see if anyone in your area was up for a low key coffee/chat/walk in the park whatever, where you may or may not discuss your issues. That might be the last thing you want to do. I am sure that there are people who would just love someone to chat to in a general way to help them get their focus readjusted IYSWIM
The main benefit of doing it this way is that there would be no expectation or onus on the OP to be jolly, chatty, entertaining etc as there so often is when we meet new people - although this may evolve, which would be lovely.
People look for sexual/relationship partners on line all day long. A cup of coffee in a high street Starbucks with MNer is surely a safer bet?