Hello, I am currently 3rd kyu and living in S. Korea as an exchange student. In december between the 17 and 27 I might be able to travel to Japan and visit Hombu Dojo. I'd love to be able to train there once or twice, however I don't know anything about the process. Is it possible for foreigners to train there once? Do I need some pre-registration before going? Is there a cost? I've never been there or around the area, do I need to find some place to stay there for the night? All the information you can provide is appreciated. Thanks.