What a unique name you have, Storym. It’s beautiful! I’m imagining it’s pronounced in a way that would rhyme with “forum.” I'm a big fan of names you don't hear everyday.
It looks like your Walt Disney World vacation is waiting just around the river bend. You must be getting really excited. I know I would be!
As for upgrading your existing theme park tickets to include the
Park Hopper Option, I have some good news and some not-so-good news. Let’s start by looking on the bright side of things, shall we? I’m happy to tell you that indeed Guests
are permitted to add the Park Hopper Option to existing tickets. It sounds like you only want to hop between parks on one of your three days. Unfortunately, the Park Hopper Option doesn’t work quite like that; it’s an all or nothing type of deal. In order to upgrade, you’ll pay one fee and the option to park hop will be available for all of the days on your tickets.
If you do decide to go ahead with the purchase, you can visit
Guest Relations when you arrive to a theme park. You may also be able to upgrade your tickets through the
My Disney Experience app. To check, access the app and make sure you're logged in. Then, look for the three lines in the bottom right-hand corner. From there, click on “Tickets and Passes.” When you see your tickets on the next page, you may also find the option to upgrade. If that’s not the case, a quick stop by Guest Relations will get you all squared away.
I hope that helps!