I stop boarding & run down to find 30 or so pax strapping in or stowing handbaggage on a longstop a/c parked on the bridge, unpowered & completely dark! They had actually gone through two closed doors to get to the a/c then taken off the safety belt from the door to board.
Classic Risky Shift by the Pax there. Not there fault, it was probably the case that they were given ambiguos advice by a bored, listless soul who assumed that the Pax were just as privvy to the operation as themself.
Just speak slowly and clearly and you should never allow them to have to make a choice when on or around the apron.
XX
Daft of the Datum