When working in the baggage hall I have to tell passengers not to load their trolleys wide with luggage as it will not go through the doors, but off they go and guess what happens they become trapped in the doors and the queue builds up very quickly. No airport staff in area so this makes matters worse. Passengers don't read the screen adverts about the trolleys.
Why 2 doors in T3 and only 3 in T1 given the number of passengers arriving at T1 at peak times?