Dress neatly and appropriately; men should avoid wearing shorts on formal occasions.
Do not step on toilet seats, and always flush after use.
Do not eat or drink in museums.
Do not smoke in no-smoking areas or where air conditioning is in use.
Avoid wasting food, and do not pick your teeth in public after meals.
Do not take photos in areas where it is prohibited, and always turn off your flash in locations with a "no flash" sign.
Always ask for permission before taking photos of locals.
When visiting museums, wear your bag in front of you—otherwise, a simple turn could knock off a thousand-year-old artifact.
Safety first when driving abroad: do not drive against traffic or run red lights.
In some countries, tipping is customary and is the legal income of service workers. Environmental Etiquette
Bring your own toothbrush and chopsticks. Do not pick flowers at will. Avoid harming small creatures. Do not get too close to wild animals. When answering nature’s call in the wild, choose a spot far from water sources, and remember to bury waste and take your toilet paper with you.
Take all your trash with you when traveling outdoors.
Do not smoke or let sparks fly while jungle trekking.
Do not touch or take marine life while diving.
Help pick up litter left behind by others when in the wilderness.