Cunard too need to put some thought into the QE2 disembarkation process. All 'self disembarking' passengers gathered at the designated time in the centre of the ship, taking their luggage with them & sitting down in the centre circle. Unfortunately they were not allowed to stay there as it was determined to be a 'hazard'. Instead everyone had to queue round the outside of this circle, blocking all the corridors & access routes with themselves & luggage.
Who's idea was it that having passengers block corridors was less of a hazard than sitting in the middle out of the way ???