The only requirement for AA meeting is a desire to stop drinking. I know a lot of people, who would not qualify for membership if there were two requirements for AA membership.
1. a desire to stop drinking
and
2. a belief in God
And I am not knocking your beliefs at all, but this thread reminds me of the Al Anon joke that goes:
Q 'Why don't alcoholics believe in God?'
A 'Because they don't like competition'
Ouch!