Politeness can also be synonymous with respect. Putting other people first: giving them the biggest piece of cake, the best seat in the restaurant, or the center position in the photo, are all part of everyday politeness in Japan. The traditional Japanese house even has a dedicated seat for guests — the one in front of the tokonoma, so that the guest is framed in a background of the beauty of Japanese art (hanging scrolls, ikebana, ceramics, etc).
Respect is about patience. Waiting in line without complaint, and giving others the chance to express their opinion without someone immediately challenging their words. It’s about listening to others, allowing them to open up. It’s respecting other’s opinions, even when they’re different from yours.