Hopefully someone here can help me with this question! I received a PIN a while back (Jan probably) and i have a trip booked for Dec 2010. I thought i had read somewhere before that you could use a PIN for more than one trip as long as it fell in between the dates that the PIN email said. I just called, and was told that only one trip may be booked with one PIN. If that is the case, that's fine, i just wasnt sure what the deal is with the PIN's..this is the first one i have received. We were thinking about taking a quick trip over memorial day weekend. TIA!