What I do is put some 100 yen in the vending machine and eat the food or drinks that given to you and keep going to the streets until you get more money then you can wrap it up do the 100 yen again but save the food go back to the streets and if you see your hunger is on 0 eat the food also you can live without the thirst meter being 0 for a long time but once the police comes just wrap it up again and see how much money you got if you have more then 1500 yen you can put the 500 yen in there for either good food or good drinks or by a rare chance you get apple seeds. Hope this helps.