We flew from Glasgow a few years ago and there were people in the queue at the Departure Gate with plastic glasses of beer, some had brought two glasses.
As soon as we got up in the air, there was an immediate queue for the toilets.
On the return we waited on the runway at Dalaman and were told that two people had not board the plane. We waited for about 20 minutes and missed our slot for flying out. The stewardess told us that they were about to offload the luggage, when two woman boarded the plane both drunk and having trouble walking down the aisle, the language out of them was awful and all they did was laugh, no apology.
We were so mad with them and could not understand the crew allowing them on the plane. Fortunately after we took off and a few more drinks, they both fell asleep.