Well, my colleagues have been mad about Japan for several decades, and it is nothing new. Japanese audience likes to hear it all. I visited the country for several times. I am fascinated by their care for art. There is much more of music life in Tokyo than in London or New York.
Japanese people are very tactful.
Be silent, don't cough and applaude whether you liked the piece or not'. They take care about their pianos as if they were racing car. They have excellent cuisine, and they are kind hosts. They want to show to you their tradition and heritage, to which they are very proud of. I've been told that people in the United States treat music as any other merchandise.