London - Sydney QF 400. Bangkok was the Qantas slip at that time. Business class, top deck. I was the only passenger up there.
Crew who got on in Bangkok were in a worse state than the crew who got off - they'd been partying (in Patpong?), and were wrecked.
After takeoff the Steward came and said "this is how it's going to work. I'll serve breakfast, but then I need a snooze. When you've finished breakfast, let me know what you'd like to drink, and I'll bring you a case of it. Then after I've had a little snooze, you can have anything you like. OK with you sir?"
Sure enough, after breakfast I asked for a Drambuie, and he came back with a dozen...