Maybe someone can answer me on this since it seems to be stumping all the cms? If I have a 4day park hopper water park and more ticket can I upgrade to a regular annual pass? What happens to the original water park days that were included? Can I use them or will that entitlement be null? And if I did use one would I no longer be eligible for the regular annual pass? If someone could answer any of this I would love it!
It's sad that the Ticket Sticky has been closed out. But I remember explicitly what was written about upgrading a MYW ticket that has the WP option to a regular AP. You can upgrade your PH+WP ticket to regular AP only
IF you do not use any of the WP entries on your ticket.
If you
DO use any WP entries on your ticket, you can only upgrade to Premium AP, which is $125 more than regular AP and includes same day entry to both water parks, and 9-hole Oak Trail Golf, plus the other perks and discounts of the WDW regular AP.
Whichever choice you make, be sure to use your discount-priced ticket FIRST to enter a theme park before doing your upgrade. That raises (bridges) the value of your ticket to Disney's current gate price for that ticket. Be sure the CM helping you gives you the correct credit for your ticket or move on (politely) to another CM. I have posted a link (below) to Disney's current gate prices. What you should owe is the difference in cost between the AP and Disney's gate price for your MYW ticket. Do the math before the upgrade, so that you know the price given to you is correct.
As mentioned, each theme park has a Guest Relations facility both inside and outside the entrance. Epcot also has a GR at the International Gateway entrance. There are also two GR facilities at DTD. Your new AP will have the same start date as the first day you used your MYW ticket. If another start date is printed (such as the date you purchased your MYW ticket), have that corrected. (It happens sometimes -- in error.)
There is an annual WP AP that you can purchase, but it doesn't include the Oak Trail Golf.
WDW Annual Passes:
https://disneyworld.disney.go.com/passes/
WDW current MYW ticket gate prices:
https://disneyworld.disney.go.com/tickets/