In AA, we offer a solution to a deadly disease. In doing so, we aim to be courteous and cordial, but business is business, and if someone means business, so do we. Anyone with a real problem and real willingness will knock over chairs and bite off hands to get to it.
By the time of my last drink, I was desperate, and I just wanted to be told what to do. I acted on the information received, and I got well.
Meetings were stinky (full of cigarette smoke), in unpleasant venues (in St Petersburg, Russia, in the early 1990s), with people drunk and high in the meeting, and there were lots of behaviours. I didn't care. I had nowhere else to go, and I was dying, so I was grateful and pleased.
There's currently a culture of mollycoddling newcomers and others, placing newcomers on a pedestal as the most important people in the room, and trying to do everything to please them, make them feel welcome, included, and at home, and avoiding anything they could find off-putting (e.g. talking about the Steps or God, encouraging newcomers not to share if they don't have experience on the topic, etc.)
This treats newcomers like picky customers who need to be cajoled into making their purchase or fragile, vulnerable infants or invalids. Newcomers are generally neither. They may be in pretty poor shape and damaged, but fragile they are not. Touchy, reactive, immature, yes, but not fragile. Exceptions exist, but exceptions are just that, exceptions, and their exceptional status is usually self-evident.
Now, this is not to say that one does not, as I said above, act in a courteous and cordial way, extend a warm welcome, etc., and adopt basic measures to ensure a relatively pleasant environment, whilst robustly handling disruptive or definitely antisocial elements for the protection of the group, but I don't think it does anyone any good, whether established members or newcomers, to simper, hand-wringing-ly, effectively begging people to stay.
They're adults; they can choose. So the motto is: be friendly and kind, and encourage through attraction not promotion. No need to compensate for anyone's unwillingness, hesitancy, objections, or the thousand other barriers to entry that are easily and only dismantled from the inside through an effective rock-bottom.
Alcohol and sobriety without AA will do their work, don't you worry.