nobody has to do anything, slangking.
an open AA meeting is open to anyone to attend; you do not even need to be an alcoholic to go.
if you want to be an AA member, the requirement is a desire to stop drinking. That's it. and that is clearly written out as the sole requirement for membership.
the reason you are getting pressured is likely that the folks pressuring you have found the steps/suggested program to be invaluable to them and are attempting to share that with you, but not paying heed to the concept of attraction, not promotion
