Korea is oft dubbed "The Land of the Morning Calm"... maybe in years past... Present day Korea is a country that never sleeps, though the morning is generally one of the calmest parts of the day. You can always find somewhere to go or something to do at any hour of the day.
Oddly enough, despite the chaos and cacophony there are places you can go even in the heart of Seoul where you can escape the fast-paced life and revel in the culture of Korea.
Korean people are generally a friendly playful lot. Moreso when alcohol is involved. They take great pride in their country and culture and are thrilled by any effort we demonstrate to learn more about them and their language. Any time I spoke Korean I was constantly befriended and given hugs and arms around my shoulder like that Korean person was my proud long lost brother. They would show incredible pride in ME for learning their language and they would take me under their wing and (because they were often older than me) I would be dubbed "dongsaeng" (little brother). This could occur at a bus stop, in a pub, on the top of a mountain, in a fishing boat, on a bus, literally wherever I was.
Koreans are often looking for a place to unwind and let loose. It's a fun, funny experience. Be open to this.