What advice would you give to a foreigner coming to Korea for the first time?

Let me introduce Korea.
First, table manners.
When foreigners come to Korea, they must know about many manners.
It is very important. Table manners are important in Korea because
Korea is the country of courteous people in the East, thus we need good
manners. When you eat something face each other while eating with seniors,
never make sounds while eating and don't do anything else like reading.

Second, Korea's culture.
Foreigners must understand the Korean culture.

The Kimchi is a Korean traditional food and a crucial food in Korea.
It is too spicy but very good for the health of so many people. These
days, more and more foreigners like to eat Kimchi.

Korean traditional dress (Hanbok) is known to be very unique and
elegant. The design and color is slightly different as time passed. It
is never tight but very loose. It doesn't have button. If you watch
any historical drama in TV, you can see a variety and beautiful
designs by jobs, social levels, sex and age.
It is not easy to verbally explain unless you actually see in once. It
definitely represents one of the great beauties of the orient.