Being a respectful traveller is about recognising that you are a guest in someone else's home, culture, and community. Taking time to understand local customs before you travel is one of the most valuable investments you can make.
Dress codes matter enormously in many cultures. In countries like Japan, Jordan, and India, covering your shoulders and knees when entering temples or mosques is a sign of basic respect. Carry a light scarf — it weighs almost nothing and will save you in dozens of situations.
Learn at least five phrases in the local language: hello, thank you, please, excuse me, and sorry. Tipping customs vary hugely — in Japan it is considered rude, while in the United States it is expected.