・You can buy drinks and other items at automatic vending machines located everywhere, including station platform.
・Depending on the season, machines offer hot or cold drinks.
・Cash is accepted. You can use IC card like Suica at some machines. (After you press the button of your selection, hold your IC card over the reader.)
・Throw away empty cans and PET bottles in trash bins located next to the machines.

In Japan, there are all kinds of unique automatic vending machines like the ones offering books, fruits, toys, etc.
Look for these machines and make your purchase when you come to Japan !