1. You might wander into North Korea.
Before I left the US to teach English in South Korea, I got a lot of “advice” from well-meaning friends, relatives, and random Internet commenters. Lots of people made the joke, “Oh don’t accidentally end up in North Korea!”
That is impossible. There is an expanse of land called the DMZ that is heavily guarded by troops from the North, South and the US. It’s like saying, “Don’t accidentally trip and fall into a bank vault.”
While the two countries are technically at war, there’s very little evidence of it in the day-to-day lives of Korean people and foreign expats. Many South Korean people do not view North Korea as part of their country. They look at the divided peninsula as two entirely different countries with different interests and cultures.