I have never been a dub.
I went to one of these a couple of years ago, thinking my JW neighbours/friends could get some brownie points from my attendance. I think I spoiled that by having a cigarette outside (before and after) and because I learned a couple of Hebrew words ('have a good passover - 'tov' something) which I said to the people either side of me when they passed the goodies round.
All brownie points were cancelled the following week when a young Filipina lady moved in with me. All I can say is that I'm glad that she is a roman catholic 'cos she seems to have violated all the points on the dubs' d/f list. Luckily, of course, not being dubs we never had to go before a JC to outline our 'sins'. But she liked talking about stuff in great detail and would probably have enjoyed the discussion. There would not have been a dry seat in the house.