i work in Radisson Blue hotels - i am a clerk of a souvenir shop
i get to practice my japanese with some 5 to 10 japanese tourists a week since they usually travel in small groups. i get to see Chinese and tourists from Taiwan far more often - still, i use a paper to draw japanese kanji that i know are chinese to start a conversation with them
Had some nice encounters - specially with one really funny lady in her 90's and her granddaughter. and then this one family actually knew my japanese sensei in university and had come to visit her.
so. here are my 2 cents on how it is to work with Japanese tourists
they usually are cool, sometimes a seem little distant or shy but others are fun and lively.