... particularly interested in knowing whether some go to AA even though booze is not their primary problem. I find most people in AA are accepting of all people's addictions, which is much different than it was 30 years ago or so.

A friend went cold turkey before, and he lasted about 50 days. I'm encouraging him to reach out and go to meetings. He can't just pick up and go to rehab. That's not an option for him.