Here's a story that probably isn't that unusual: Haven't been to DisneyWorld in a LONG time, maybe 13 - 14 yrs now and can't wait to go back, but just did NOT have the time! We have a BUNCH of old tickets which I was told "never expire" so I accrued them almost as an 'investment' in future Disney vacations, but I was dumb and did NOT write down what was what (it's been so long) I can not remember how many days etc are on which tickets (we have all kinds) and we will NOT know until we arrive at guest relations and check. The problem with doing that however, is that obviously it means I can't know in advance what tickets we will need to buy (I think we will need some, but I am not sure) online before we arrive and obviously the smart financial move is to wait and see what we have vs what we will need to buy rather than going online beforehand and buying unneeded tickets. Once we know exactly what we have, we simply add whatever cash and have our full tickets right? Okay, but THEN it would mean that there will literally be NO TIME to plan ahead fastpasses/itineraries; not only that but we will have to pay full price since we will be buying at the gate (not to mention having to waste a day figuring out all this mess!). I wish I had written down exactly what was what back on the last visit : / One idea I had was if they allow us to use the credit for Disney dining we could simply buy all tickets beforehand, but I was told they could only be 'upgraded' to visit theme parks and water parks. Any suggestions on strategy with this unknown variable? Thanks!