I prefer not to discuss AA outside of the meetings. The main reason is I like the one day at a time philosophy. I feel no pressure telling myself I'm just not drinking for today and leaving it at that. (I work with several AA members and have never had issues with anyone carelessly breaking my anonymity.)
When I came into the rooms of AA I had no idea how it would turn out. I had broken promises to myself and others about my drinking too many times in the past. One day at a time. I have always liked that idea.
Another concern is 12-step programs can be controversial and I don't feel like having a potential argument about AA with non-members who might take a negative view of the program.