I am confused about whether to go ahead and buy 10 days when I really need 7 or 8. I know that they are cheaper per day, the more days you buy, but then you have to add on no expiration, and then if a good package deal comes out for your next trip, you would have to use the new tickets. Decisions Decisions. The only way I can see using these is if staying off site at one point, and I can't imagine doing that. Help me decide!