Most modern-day Japanese pay scant attention to religion ... or a dark suit with a white dress shirt. Clothing should be in a subdued shade; accessories in animal prints or fur are inappropriate.
Japan is famous for its numerous etiquette and decorum rules ... Weary travelers were offered a cloth and a bucket of water at inns and tavern. In the U.S., we mostly run into them in sushi ...
Like riding the train, shopping has its own cultural norms and etiquette to follow in Japan. While going to a brick-and-mortar store is becoming less common in favor of online shopping in many parts ...