Longest immigration queue I have ever seen anywhere in the world-easily 1000 people stretching to both ends of the terminal. Best airport in the world? I'd call it disgraceful.
its better to bring your own universal adaptor to avoid going to the information counter because its quite far from the waiting gate area...they have free wifi...:)
There's a post office in the second floor at the central side of the building. Hay una oficina de correos en el segundo piso situado en el centro del aeropuerto.
the slowest & the worst custom check to welcome visitors! always nearly thousands of people queuing in a single line. prepare to wait for more than hour before you find your possibly lost baggages!
There's a prayer room at departure terminal, near gate 100+ area, 2nd floor, near Asiana lounge. Comfortable and spacious, sejadah and qiblat direction available.