I try not to talk about "total price" with multiple tickets added together. It is VERY confusing.
1. That means it was booked prior to the Ticket changes and price increases of Feb. 12, 2017.
2. & 4. I find dealing in the cost of ONE ticket is easier, and then the guest can multiply by the number of those tickets needed.
3. What you want to do is one of THE most confusing and inexact of current ticket upgrades (Pre-Feb. 12 ticket, upgraded to AP.)
HERE are the
ticket prices pre- Feb. 12, 2017.
Below is how I figure it:
5-Day PH pre-Feb. 12 price- ADULT: $435.59
5-Day PH pre-Feb. 12 price- CHILD: $414.29
Platinum AP Current price- ADULT: $829.64
Platinum AP Current price- CHILD: $829.64
---------------------------------------------------------------
$829.64
-435.59
=394.05 Upgrade Price, per Adult
$829.64
-414.29
=415.35 Upgrade Price, per Child
--------------------------------------------------------------
That said, it is POSSIBLE that you can run across at ticket or Guest Relations CM
who will be willing to upgrade based on the CURRENT prices for the tickets that you have.
That can save you a lot of money.
But, there's no way to know what the CM just MIGHT do for you.
It never hurts to "ask nicely."