Maybe you didn't, but the 'trick' many people use is to drive up to the terminal and then use the mobile to phone in to the mate in the terminal..... The airport police look out for single occupant cars and divert them. Sort of logical, don't you think? There would never be enough room in the drop off for that sort of behaviour.
Admittedly stopping the free time is stupid, but some bean counters cannot be stopped from their nonsense.
Indicates that at some times the airport is busy
