[sc_rufctr]

I was there 23 years ago... It was expensive then so I can't imagine anything has changed.

BUT It is one of the most fantastic places on the planet. You'll have a great time by default and a lot of Japanese people speak English.
You shouldn't have any real issues although obviously being Asian they may assume you're Japanese.
The cops can be a bit funny. Just be polite if you have contact with them (don't ask). Actually, be polite with anybody you have contact with.