Can I have plastic surgery when traveling with a group in Korea? Cut only one double eyelid.

You have to be careful with this. Cosmetic surgery is a very serious matter in Korea, although cutting double eyelids only requires an appointment in advance. Autumn is the peak of cosmetic surgery in Korea, so it may take some time to make an appointment. I'm talking about regular plastic surgery hospitals, small hospitals that cheat Chinese people, and black hospitals. You can have surgery when you go.