Your life Jacket is under Your Seat
It won't do me any good cos there's not enough water down their to brew a cup of tea from. I'm flying over the driest continent on Earth, just what I need if we crash in the bush I mean the Simpson Desert speaks for its self, so does the Painted Desert, the Great Artesian basin means putting boreholes thousands of feet down to find water, the Todd River may sound wet but know a Canadian who slept in it. It only runs occasionally, every 20 years or so. lake Eyrie again, was actually wet last wet season, but no usually its dry too.
Might as well be on Mars.
Therefore life jacket is probably in case of freak spillage of the drinks trolley. Possibly caused by a lanky pom with his feet sticking out tripping up a stewardess, again.
In answer to your question of where the F'in hell am I off to this time, well Melbourne for a course I R now certified to do netapp. If you don't know what I mean, don't worry unless your both very rich and very techy your not going to come across one.
Melbourne, is a nice place, cold its cold - comparatively. 7 degrees one morning, or an English summer lower than I'm used too. It was also raining when I left, in the English style. Medium heavy, I-could-do-this-all-day sort of rain. The sort you remember from your last holiday in Wales. Not like the Darwin rain which is less like air with water droplets in it and more like a lake with air bubbles. When a storm comes through It can dump a Cornish summer holiday's worth of rain in a few minutes.
Below the plane now is sand dunes, rippling away, red obviously. And another dry lake on the horizon. OK, I admint that aumucst the dunes is a river with some bilabongs with water in it.....