See what looks like the clear glass door? It separates cabin area. It can only be opened if unlocked - from the food prep area only! If it is locked then entry is only possible though drivers compartment. At same time the Shower door can only open if the clear door is in open position, the shower door then will only open right angles to the other side of the open clear door - so if your in the food prep area there is no way entry is possible as the door blocks it off completely :-)
I will update photo's to show what I mean later, but for now this is how it will look from food prep area.
