Strangely , there were even bars in pubs in South Wales where young men were not accepted. When I first married, in Cardiff, I instantly acquired a status and my father- in- law would therefore invite me into the saloon to join the 'elite' of older, married and widowed men. My poor brother-in-law, who was single but only a bit younger than I was, had to go in the public or the middle bar. I remember my father-in-law asking the barman to send a message to say that his own son, my brother-in-law, was now invited in to sit with us for a few minutes, which he did, politely, before being sent away again.
The women,of course, didn't go in at all. My wife, being spoiled by living in London, decided to go with me once, whereupon her brother asked "Where are you going?" followed by "But who's going to cook the dinner?"