I had a couple of good long fares to Melbourne airport with Didi and always when going online with Uber to get directions to the Uber waiting Lot, Uber X seems to be full. Is this normal occurence? And are we allowed to drop passengers off at the international departure terminals up the ramp? An airport security gave me a cold stare when he saw the Uber sticker on my car and made me think if I'm actually allowed to drop passengers off here or not? Thanks!