Reply to post:

May be the idea is that these are bookable, may be on board the flight, so you can book a 4- 5 hour slots on the way to Australia. A alarm system will gently wake you up, a quick change of bedding by the hostess and the next person move in.

That way they can all be cleared out and locked up and passengers in there seat ready for landing an hour before the flight is due to land.