The only requirement for AA membership is a desire to stop drinking.   12x12 pp 139

I heard the short form of the Third tradition in the Preamble. When I came to AA I could not accept myself, my alcoholism, or a Higher Power. if there had been any physical, mental, moral, or religious requirements for membership, I would be dead today. Bill W. said inn his tape on the Traditions that the Third Tradition is a charter for individual freedom. The most impressive thing to me was the feeling of acceptance from members who were practicing the Third Tradition by tolerating and accepting me. I feel acceptance is love and love is God's will for us.