Slip-on shoes are convenient since you may need to remove them in certain places. You may be provided with slippers to use indoors except in rooms covered in straw tatami mats, where you are expected to walk in your stocking feet. Always remove your overcoat in the hall before entering an office. In Japan, a business relationship is based more on personal relations than on the cost of the product. The Japanese first want to know you, and vital facts about you, including your age, the university you attended, and your firm.
Business comes later.
Your colleagues will appreciate you showing the same interest in their background. The Japanese don't like surprises. Prepare them for upcoming presentations or discussions by sending them written material well in advance. This will allow each member of the team to have a copy, which will speed the decision-making process. Make business appointments as far in advance as possible.