YAAAAAAAY! KOREA!!!!!!!!!
One thing that immediately comes to mind is that it's VERY polluted. I don't think it's quite as bad as New York, but most of the cars run on diesel, making the environment extremely bad.
Also, people smoke A LOT in Korea. Like...everywhere you go on the street. They smoke. (Especially in Seoul). Don't know so much about Gangneung, but it's a general trait most Korean (men) share.
Please don't make fun of our accents when we give silly attempts to speak "engurrish"
Have a great time! And hope the flight goes okay.
This is my signature.