Hi Dave,
Thanks for the update, yes it does look as though it was more of a "watch out" type of warning, maybe staff were just told to be alert to the issue but not to do anything unless drunken behaviour was noticed, who knows.
This business of charging for drop off in the name of easing traffic congestion is of course nothing more than a money raising operation, the same has been done at Belfast International where you are forced to go through a £1 drop off zone or else go into one of the carparks, makes no difference to traffic flow and if anything slows it down as there are barriers to the zone but fairly rakes it in for the airport. At Belfast City there is a better, much more user friendly approach whereby cars can no longer get access to the front of the terminal building and must go through a drop off zone but at least this is free for 10 minutes which is more than enough to unload your passengers, goodbye hugs etc. It is a short walk to the the doors of the terminal so all in all an acceptable way of doing things. Not been through City for a while so hopefully what I say still holds true.
Michael.