Hi there, Stacie!
The way the
Magic Your Way packages work at Walt Disney World is that each person in your party needs to have the same number of everything. This includes number of nights in a Resort hotel, number of days on Park tickets, and number of days on the
Disney Dining Plan. If you add the Park Hopper option before you go to Walt Disney World, you'd have to add to all members in the party.
You sure can upgrade your ticket when you arrive at Walt Disney World. In fact, that's the route I recommend taking in your case. You'll just need to simply bring your Park ticket to any of the ticket sales locations on Walt Disney world property and let them know that you'd like to add the Park Hopper feature to your ticket. That's all! Easy as that!
Thanks so much for stopping by the Moms Panel with your question, Stacie! Feel free to let us know if we can help with any others that you have!
Wishing you a Pixie Dusted vacation!
~Jackie