“How do you know whether or not an event is an “A.A.” event? The criteria generally in place for an event to be considered “an A.A. event” is that it be put on by A.A.s, for A.A.s and about A.A.”
From G.S.O. Guidelines MG-04 on Conferences, Conventions and Roundups

Men’s Memorial Day Weekend Retreat
May 26 - May 28
A Daily Reprieve
Sierra Madre, CA