When arriving in the wee morning and you have to go through the baggage security, you'll find a lot of the workers standing around but only one lane is open.
On an average an aircraft lands here every 5 minutes. Lott of residential areas towards the approach for landing. Gets quite noisy for the residents...
Limited free wifi is a poor standard for an international airport. Terminal 3 is clean, lots of shops and restaurants. No pick up or drop off area. Taxilines are ridiculous at times.