here here :

The second I mentioned elsewhere. A group of Japanese women, not very well speaking Russian, came to the restaurant. I ordered a cabinet in advance. My first thought was, as usual: Well, the hour of the hour is guaranteed. But they passed there quietly, some children with their feet, although there was almost my mother on her knees, some in a wheelchair or on her arms, the waitress took the children's table from them. One then cried, the rest of the solidarity sneered, but they were calmed very quickly. Then they also calmly separated. Everyone smiles, mothers are calm and friendly, children hold on to them, they are also quiet, look with curiosity. Strictness did not smell.
and...
For the Japanese, as far as I know, bringing problems with their behavior to the people around them is considered extremely impolite. Mentality is so.