If bowling is the only thing the alkie is doing to stay sober -- he/she will probably be out bowling and will not be in the meeting. If bowling is what's keeping them sober -- and the rest of the group is not bowlers -- you might suggest that they start a Bowlers Anonymous group.
I've learned that I have to be careful about rigidity. I can get so rigid -- that I break.... and will have a tendency to break others, as well. I have to remember Rule 62. And, that it's one thing to be hard on myself -- and not a good thing to be too hard on others.
A meeting that lacks structure and disciplined effort towards recovery through the AA program -- for me, is a meeting that's a waste of my time. If the meeting lacks structure and lacks discipline -- it's best to have those kinds of meetings in parking lots or coffee shops, "after the regular meeting." And, sometimes -- I can get more out of the unstructured and undisciplined meeting after the meeting -- than I got in the meeting.
For me, AA is about learning to live sober. It's good for me to hear from the bowler -- because if it's 3 am in the morning, and I'm disturbed, and nothing seems to be working, and I can't find a drunk to work with -- then, hopefully, I'll try going bowling instead of reaching for a drink.
I try to find some value in anything I hear shared. The value may be something I might want to try in the future. Or, the value may be that it shows me what NOT to do!
I prefer speaker meetings over discussion meetings. Discussion meetings have a tendency to get off track as alkies try to impress themselves and others -- with themselves and their thinking.
When it comes to Literature discussion meetings, I prefer BB Study, or AA History (as in AA Comes of Age, or Pass It On, or Dr. Bob & The Good Old-Timers). My experience has been that 12 & 12, Daily Reflection, or As Bill See's It type meetings most often turn out to be mental masturbation.
Experience = "what I did" and "what I do." Not, "what I think about something", or "what I know." What I think and what I know, most often prove, over time, to be wrong, or only half-the-truth. And, it isn't important to me or anyone else "what I think I know." The only thing that has value to me or to others is "what I do" or "what I did." The value for me is: it either kept me sober or it didn't. The value to others is: identity.