A lot of extra space. This is in order to walk aimlessly along the airport for a long time on one floor in one direction, and then on the other floor in the opposite direction. It is impossible to heat such a room with ceilings of 20 meters. At the end of April, you can freeze at night at such an airport.
The monopoly dominance of three exchange offices and the difference between the purchase and sale rates of 25-30 percent! Cafes are unreasonably expensive. Take the sandwiches with you.
Plenty of duty free. It is mandatory to pass through these stores, there is no other way. The good thing is that the purchases are voluntary.
The administration is a tightwad!!! Wi-fi is not provided to everyone. Turkish Airlines customers only. For the rest - some kind of passport registration and for a limited time. This is the airport! You'd think random people would show up there from somewhere to play games on the Internet!