Are you sure we would get the full refund of the 7 days even though we only paid for 4?
Yes. 100% positive. There is one, very important catch. It's the one thing I keep pointing out:
Use the ticket once to walk into the park before doing the upgrade.
Some CMs are less knowledgeable than others, so do go in with knowing what price you should be getting credit for and what you should be paying in total. On my other computer I have a word file that gives you a sample of what should be done/steps to follow. I bring a copy of that with me when I do upgrades/are with people who will be doing upgrades. I'll try to remember when I'm on that computer to PM it to you.
Our family is on two different AP schedules, and when I upgraded 3 of the tickets this past October, I wasn't given full gate value. I went back the next day and had it price adjusted, but it was a hassle. I was also given the impression that they aren't suppose to adjust the price after the fact and I should have had it fixed/corrected as soon as they mistake was made.
If when doing the upgrade you can't find someone knowledgeable, and I've heard of people having a hard time even with guest relation managers not knowing, just politely thank them and try again at a different time. Maybe a different guest relations office. I also gather from word of mouth it is better to do it inside the parks guest relation offices rather than at the outside guest relations office or at the TTC. From what I hear, I believe MK might be more knowledgeable than other parks. All hearsay though.
I recommend going for the upgrade early in your trip for this also. Also, after check-in, or as soon as possible after check-in, walk over to your resorts concierge desk and have them put your tickets on a separate admission media. Guest Relation offices are capable, but from what I hear (again hearsay), they aren't very good at it, especially if you have dining credits.
As a side note, check your AP to make sure you have the correct anniversary date on it. When doing our upgrades, actually the price adjusted ones, they gave the date for expiration as the date the tickets were sold to the ticket broker--3 months after first use. Do keep in mind that all tickets must be upgraded within 14 days of first use even with no expiration on them and the anniversary date of the AP will be the first day the upgraded ticket was used, not the date you did the upgrade. Oh, and resorts cannot do upgrades to APs.
It really is very simple, even though it doesn't sound like it.