I should add a few things....
First, you will NEED someone to help you. You will need a translator, good friend, or paid companion to be with you for at least the day of the surgery and first week afterward. I speak Korean conversationally, and they had English-speaking staff at Shimmian, but I still could not have done it without my native-Korean fiance. He went with me to my pre-surgery appointment, was there on the day of the surgery, took me home afterward, and came with me to all of my follow-up appointments. He lived in the same apartment complex as me at the time so he was always avialable to help me if I needed it. I could not have done it without him. I had rhinoplasty and chin implant done at the same time, so for the first week I could only eat soft porridge-like foods, had a very swollen face, and was generally supposed to be resting. He brought me food, helped me hail taxis to go to the appointments, etc. Please please do not try to get PS alone in Korea- you could end up in a very BAD situation if you try to live/stay on your own without any help during your surgery and recovery. Luckily for me, Shimmian is very safe and I had zero complications, but imagine if I had? And if I had been living alone with no one to help me? It would have been very bad.