Question - if I'm going in May '08 and initially buy a regular ticket package in the hopes that a free upgrade will come out, will I be able to upgrade (by paying the difference) if an upgrade doesn't come out? Also, if I buy the hopper and water park option in the first place and a free upgrade code comes out, can I apply that and save the $? I don't want to shoot myself in the foot, so-to-speak, if there is some way that I can get the same tickets in the end for less $.