Here are a few points of...
Here are a few points of Japanese etiquette that will make your trip go more smoothly.
Bowing: Japanese don't shake hands, the bow. The angle of the bow depends on the relationship between the two people. Friends may merely nod their heads while greeting the emperor necessitates a deep bow with your head down to your needs (be warned - this takes some doing but unless you plan to have an auduence with the emperor, don't worry about it too much!). Japanese who have some knowledge of the West will often put out their hands to shake. The best advice is to follow the lead of the person you are greeting.
Name cards: Everyone in Japan has a name card called meishi and business people exchange them as soon as they meet. You won't need them while travelling for pleasure but the are mandatory for business.
Names: Japanese traditionally write the family name first, followed by the given name. Usually Japanese are addressed by their family name; followed by a 'san', an all-purpose honorific meaning Mr., Mrs., or Ms. Don't call Japanese by their given names unless they specifically request you to.
Footwear: Japanese exchange shoes for slippers when they enter houses and remove the slippers when walking on tatami (straw) mats. You will also have to remove your footwear when entering a Buddhist temple. Wearing slip-on shoes will make your life easier.

Nagoya towers
andean pavillion
Seto Site as viewed from Civic Pavilion
Shinkansen