My experience with Korea was the more Korean that I knew, the better the experience. I've been to Korea every year since 2014. When you compare customer services to places like Thailand and Japan, Korea is no competition.
When it comes to asking for help on the street. I used to get the wave a lot, because of two reason. I spoke English and I spoke it fast. A lot of people don't realize how fast they speak their native language to a non-native speaker. My second time going to Korea, I learn direction vocabulary and used to ask in English first. When I got the waved, I would attempt to say it in Korean. As soon as I said it in Korean, I was given help every time. A few occasions they even walked with me to where I needed to go.
I love Korea, but like every country their are pros and cons. The image the dramas portrayed was destroyed as soon as I exited the subway and was greeted wit the scent they call the "smell of Korea".
I like your honest opinion about Korea!