Adaptation to customs and cultural formalities

Since being in South Korea, there have been certain things that when you first arrive are so odd, but you start to unconsciously adapt to.
For example, it is a custom that whenever you enter a shop they say hello (anyong-ha-sey-yo) to you and you say hello to them. Also when you leave you say goodbye. It's very impolite to blatantly ignore them, like we might do at home. They say hello or goodbye and you go about your business. They will also go out of their way to welcome you...and this is everywhere.
At E-mart (the Walmart of the SK) they bow to you when you walk in the doors. I don't think I will ever get used to this cultural phenomenon though.
Another thing is when you pay for an item (credit card or cash) you need to show respect by either handing it to them with both your hands or by extending your one hand while the other hand touches your arm. This isn't just with money either. Anything you either give or receive needs to be taken or given with both hands. This can be difficult at times, especially if you're trying to maneuver your wallet etc... However, it does force you to plan your actions ahead of time. Just handing someone something with one hand is impolite. If you are capable you should never take the elevator in the subway. It is purely reserved for those who are handicapped or elderly.
Always get out of the way of the elderly. If you don't, you will get pummeled.
Younger students will bow to their teachers.
South Korea is not referred to as South Korea, but just Korea.
They don't like the fact that they are divided.
Hm...I am quite sure there are plenty more differences, although, I cannot think of anymore at the moment.

This past weekend I went to Seoul tower in Namsam. I went with some other teachers from Avalon that work in my building, but on a different floor. I'll attach some pictures.
It was pretty awesome. We took a ski lift type thing to the top of the mountain and then an elevator to the top of the tower. You could see the whole city, it was spectacular. At the top of the mountain they had a "light show" which was not so spectacular. Basically just a lot of laser lights pointed to this big circle outlined on the ground, that many of the Korean people were standing on. I thought it looked kind of like a target and was kind of joking about how it was a point of fire for N. Korea.
Also, at the top of the tower, a really interesting thing they did was told you what direction many different countries were located, So, you could look at the window and know where they are. They made a small error though, and said Russia and Columbia were located in the same direction. Which is something that, unless we had some kind of new Pangaea earth shifting occur within the 2 months I have been here, I don't think is possible.