The top 10 things not to do in Japan are: Observe the signs and do what they say. Don’t speak loud. In public transportation, avoid talking, speaking on the phone or listening to loud music. Don’t smoke outdoors, except in designated areas. Don’t eat while walking. Don’t leave tips. Don’t stay up when using the toilet. Sit down. Don’t expect to find trash cans. Take your trash with you. Don’t keep your shoes at home and watch if you are asked to take them off in temples or restaurants. Don’t make videos if the sign only allows for taking pictures. Videos and pictures are seen differently.