They are not upgradable. What you see is what you get and they do have very specific use dates. The Disney tickets can be bought and used by anyone but I have heard that for Universal tickets that is no longer the case & you must be part of some event to buy them. I'm waiting for January tickets but they just recently released the Nov/Dec tickets so I have a feeling it will be Christmas by the time they release Jan and by then I will have missed the opportunity to get good FP+ choices which I'd otherwise be able to log on and choose in mid-Nov. There is a long thread floating around that discusses these tickets at length if you can find it.