Many years ago Mrs.37 and I were on a fairly early flight out of LHR and spent the previous night in a hotel nearby. Having dined in said hotel we were having coffee and brandy in the bar. At a nearby table were a group of guys having a great time downing various alcoholic drinks in impressive quantities. They looked like a group bound for a holiday and starting as they meant to continue. Mrs and I headed to bed around midnight leaving them still in full cry.
Imagine our surprise next morning at LHR when we met them again, this time all in Finnair uniform, including the captain and not nearly as joyful as they were night before.