The food stamps were set to be invalid the following day. So Vito was ordered to try and sell them all before they expired. So essentially they could make a profit and the people with the stamps wound up with worthless food stamps.
In the Japanese Version black bars were put over the breasts of all the 50 playmates, which are collectibles which can be fount all over the game. If the player collects all of them, an achievement is unlocked in the console versions.