as pp said, dont do it unless you have money to waste. in addition, there is no way to verify that there are any days on a pass, so you may get to the gates to find out you have been scammed (we've seen ppl standing, yelling, crying that they just wasted all that money).
multiday passes use a biometric scan of your finger, so the same person that used it the first day must use it for every other day on the pass.