Answering some questions:

Do they have fabric/sewing stores, Walmart, western clothing stores etc.

Walmart attempted stores here, but for some reason they didnt' work here. Maybe because they are so self dependent. They do have Emart which is a cross between the style of Walmart/Target/Kmart and a department store. They have a huge grocery section, clothing, appliances, electronics, books/movies, home, jewelry, pharmacy, etc. The set up is very similar to our stores at home except that it has 2 floors. They have makeup counters like at a department store - mostly Korean brands, but I think I saw Loreal. We can get a few of American brand items there - Oreos, French's, Listerine - I'm trying to think what else. Right now we have to go to Gwangju - although rumor has it they are building one in Naju. We are hoping!
I haven't been in any of the fabric stores. I'm not sure how they work here. I know there are some that sell bedding and also the traditional dresses the hanbuk. They wear those to special occasions. If you look it up online you probably will see one. I need to take a picture of one. I may buy one. The bedding is different here - they don't use the same kind of sheets we do. Its hard to explain. I haven't seen a traditional bed in a house yet so I don't know how they make them up. In the windows they look similar to ours, but I know they don't use sheets or pillow cases.
The dress here is very similar to home. The styles are a little different. They tend to stay very fashion forward that we have heard. Very trendy. Sometimes it looks as if anything goes - as far as matching and so forth. The young people are very western and Hollywood driven - short skirts and they wear heels with everything. Lots of leggings with skirts or long shirts or sweaters. I like most of the styles. They also have some preppy stuff - Beanpole and Teenie Weenie :o) I like the store NII - it has Snoopy and Peanuts everything - shirts, jeans, purses, shoes, bags, watches -but it is on the pricey side - I only have one t-shirt from there. I've noticed that the fur on jackets is all real. I don't think I've seen much at all in the way of faux fur. Fur seems very popular this year - with lined hoods, coats, and even on sweaters. We ventured into 2 of the name brand malls/department stores. All I can say is Yikes! The only things we bought were shoes - Nike and we got Cameron a pair of jeans and Polo. That will not be a habit - he does not fit into the Korean style jeans - most of them are very thin. We will be avoiding those stores unless absolutely necessary - lets just say most everything is $50 plus and that includes t-shirt and even some of the accessories. I'm thankful that my parents taught me to be sensible. We went into Shinsegae (a kind of department store 7 floors) yesterday - they have all of the top brands - Anne Klein, Armani, Polo, Louie Vitton, Coach, Guess, United Benetton, Banana Republic, Hilfiger, and a whole lot more, the sports brands, even some of the thing that run lower in the states were expensive. They are supposed to be getting a GAP - but it will probably run outrageous. We were trying to figure out how the Korean's pay for this stuff. I told Cameron probably the same way they do in the states - they don't - its all on credit. At least I know a lot of people do it that way at home. But we don't know that for sure - we will have to find out.
Send us your questions. I will try my best to answer them.