About 2500or 3000 yen.

Don't need but probably would not get in without out. Sunday and Wednesday is their drums night. We had reservation months in advance for that

It is not very quiet.

There's no ramp to the main entrance, but the staff are top notch and almost all of them speak English. so if you mention that you need wheelchair access, they will find a way to accommodate your needs.

Yes, it's okay.

none

I think that it is unsuitable for children.

Yes, it is. Better before 5pm. 👍

Yes