If you are not used to the types of meats or flavors then it may take some getting use to, or you may have to find alternatives that suit your diet and taste; which is more difficult but not impossible. Food and meals here are also so much more affordable than in the U.S.A.--it's an amazing feeling to have a delicious meal and pay an equally amazing price afterwards!
Food is prepared very quickly. A lot of places also give you the raw ingredients and you are sat in front of a type of fire or grill that you are expected to cook your own foods on. Food tends to be on the spicier side, here in Korea.
Absolutely. Korea has easy accessibility to seafood, so it is more common and cheaper to eat fish, here. Kimchi (spiced, pickled cabbage) is part of nearly of every dish, here in Korea, and it is eaten everyday, as are foods such as rice.
Korea is a non-tipping culture. This makes lots of differences when it comes to the dining/eating out experience. Waiters do not typically come in and check on you: there is a button at the table that you press when you are ready to order or when you need help during your meal. There also isn't really a rushed feeling at all when eating out. You can be with friends and sit for well over an hour, but that is completely normal. If you look around the restaurant, you will see other groups around you who have been there for just as long if not longer. And with Seoul being such a big and walkable city, there are many dining options to explore.
