I'll be in south korea in 6 days and I'd like not to embarrass myself too bad. What are the most important do's and don'ts
Also can I buy mountain dew in korea? I suppose I could go 4 weeks without it but I'd rather not.
Oh yeah and is it possible to mail letters from south korea. I want to send a few people letters/postcards from korea. How is the best way to do that?