Agreeing with you again, oomis.
I never knew that kiddush clubs like that really existed. I was sure it was some kind of urban legend and that snopes would declare it all a hoax. Until one day I attended a simcha in an unfamiliar neighborhood at an unfamiliar shul. I walked out after sheini with a child that was getting antsy. And in a room off the main hallway I saw a couple of men wearing talleisim and eating. Also, it seemed, drinking. I later commented to my husband on this strange inexplicable phenomenon. I wondered if they belonged to a different minyan in that building that finished before us. Although there hadn’t seemed to be any place where there could have been one. My husband explained that no, there was no other minyan, and no, I wasn’t hallucinating.
Live and learn.