The cosmopolitan city of Seoul is known for having quite a good nightlife, packed with just about every activity and all kinds of entertainment venues, and with a particular proliferation of karaoke bars.
Itaewon is the neighbourhood where most foreigners start their explorations of Seoul's night scene, and is known to be a very 'foreigner-friendly' district, with lots of international restaurants and bars and more English-speakers and expats than most of the city. The night markets in Dongdaemun see plenty of action, while Myeongdong is a great spot to start off the evening with a dinner or a few beers at one of the many cafés and bars. The place to be seen in Seoul is at any one of the exclusive wine bars, clubs and expensive bars in Apgujeong-dong or Sinsadong, which attract a trendy crowd. The more relaxed, younger crowd tends to hang out in Gangnam, where plenty of Western-style clubs and bars can be found. Dongdaemun is great for a few quiet ales and a spot of theatre, or to stroll through a gallery. Hongdae is the best area for live music and great dance floors on which to move into the early hours. Whatever your taste, you can be sure to find something in Seoul.
Soju is South Korea's rice wine, traditionally served in small shot glasses and drank all at once with a shout of 'Gumbay!'. Although traditions often become blurred on the party scene, it is customary in South Korea for people to buy and pour each other's drinks rather than their own - those who don't want their drinks refilled should leave a bit of liquid in them.