Whereas we only take our shoes off in Australia (upon entering the home) if the house has new carpet or if our shoes are muddy, it’s customary for Japanese folks to take their shoes off as soon as they get home. The tiled entranceways are designed for that, and there is usually a ‘shoe box’ near the front door.
It goes without saying that we bow here instead of shaking hands, but people also ‘nod’ their heads all the time – little gestures of respect used when greeting in the morning, thanking somebody for a small favor, or even talking on the phone. It’s so ingrained here that we take it for granted after a while. Most folks don’t even realize they’re doing it.