Thanks Clara, (Sami & MM too), over 35 years ago I too joined such a club here in Liverpool. I loved it and felt very much at home (which goes without saying) my wife didn't want to know but I did manage to persuade her to visit a fellow CDer and his wife for a coffee afternoon which didn't prove as successful as I hoped it would be.
I would say go for it alone on the first occasion and then you can be much more objective when describing and encouraging your wife to come along should that be your desire.
Hell would freeze over first before I could get my wife to go to a meeting
Hugs
Heather Xx