DO’S:

Do respect the local customs: Bowing is a common greeting, and it’s polite to bow in return.
Do take off your shoes: When entering someone’s home, traditional accommodations (like ryokan), and certain temples, always remove your shoes and wear provided slippers.
Do stand on the left side of escalators: In most places like Tokyo, people stand on the left and leave the right side open for others to walk.
Do wait in line: Whether waiting for the train or in a store, it's polite to queue up and wait your turn.
Do use both hands when giving or receiving something: It's considered respectful to offer or accept gifts, money, or cards with both hands.
Do use public transport quietly: Keep conversations to a minimum or on silent mode in trains and buses.
Do follow proper etiquette in temples and shrines: Bow at the torii gate, cleanse your hands at the purification fountain, and follow the proper steps when praying.

DON’TS:

Don’t tip: Tipping is not customary in Japan, and can even be seen as rude.
Don’t point with your finger: Pointing at people or things is considered impolite; instead, gesture with your hand.
Don’t speak loudly: Japanese people value harmony and quiet, especially in public spaces.
Don’t eat or drink while walking: It's uncommon to see people eating on the go. Instead, eat in designated areas or sit down to enjoy your food.
Don’t enter a bath (onsen) before washing: Clean yourself thoroughly in the shower area before entering communal hot springs.
Don’t stick chopsticks upright in your rice: This resembles a funeral ritual and is considered disrespectful.
Don’t blow your nose in public: If you need to sneeze or blow your nose, do so discreetly, preferably in private.
Don’t tip the scales on time: Being punctual is highly valued, so always aim to be on time for appointments, public transport, and events.

Japan