Hi,
I am new here as well, and just looking around the site. I read your post and know how you feel if anyone should recognise you at the meeting, but lets look at it sensibly. Anyone who knows you means that you will know them also, I think that they would be just as mortified to be seen in an alcholol recovery meeting and therefore are very unlikely to be telling anyone else about it, and probably most people that know us already know that we have an alcohol problem whether they say they do or not, so really there is nothing new to be telling.
Hope you like it here there seems to be many sensible people here to help, advise and chat to us.
Good luck