Some are fascinated by them. This can keep things very interesting. Korean cities have touches of English all over them, which is somewhat helpful. The subway should be fairly usable to foreigners without much instruction - the bus system is another story. During your time in Korea you will encounter hundreds of different street vendors, both within and out of markets.
Bargaining is common.
There are also western style department stores. Shopping can be a great source of fun in Korea. Korean food is generally hot. Occasionally bland or too sweet. You will find some real treasures in dishes like bibimbap, mi-ok gook, bulgogi and kalabi.