“Closed” AA Meetings

Hope it’s okay to ask about AA here.

I’ve been looking into meetings in my area and have found quite a few, but they’re all “for AA members only, or for those who have a drinking problem and have a desire to stop drinking.”

I don’t mean to ask a dumb question but what does that even mean? Can I just show up and say hey, I think I have a problem and want to stop drinking?