Some FAs are willing to go the distance! A few weeks ago I was in PC on a long flight and got one of the canned margaritas, and when the person next to me got a pair of some other boozy thing I asked if I could make mine a double too and I got handed two more, total three from one drink service.

That was nothing compared to the time I was in 1D on another long flight (BOS-SEA) and the white wine of the day was iirc a quite nice Chardonnay. With the galley right there my glass never got below half and I was... very very mellow by Minnesota or so. (I did shut it down towards the end of the flight, even without needing to drive I prefer to be able to walk in a straight line!)