We operate 747-400, A340 and the new A340-600.
(Guess what airline!! hee hee)
We have crew rest areas on all of these aircraft!
We use them only for crew rest ie sleeping. No Positioning Crew or Crew on cheap tickets can enter the crew rest. Only crew on duty.
We do not store anything in the Crew rest area. This is a safety and security hazard!!!
We carry SEP equipment in the CRA, these are in secure stowages and are checked each flight.
Therefore, its only used for crew that are resting. Not a storage area or exta room for pax!
A few pax have been caught trying to get there head down, but they are all now locked with a key!
Hope this helps.