Hello and welcome to planDisney, Valeria!
Thank you for stopping by with an excellent question! It is a pleasure to assist you as you plan a visit to the Walt Disney World Resort!
I am happy to share that you can try changing your ticket dates online or via the My Disney Experience app.
Sign in to your Disney account and visit
Tickets & Memory Maker. Find the ticket you wish to modify, select
Change Ticket, and choose your new visit dates. To make modifications using the
My Disney Experience app, open the app on your mobile device, tap the three horizontal lines located on the bottom right corner, and select
Tickets and Passes to find the ticket you wish to change. Please note that all modifications are subject to availability, and additional charges may apply.
Although you cannot modify
Disney Park Pass reservations, you are welcome to cancel the reservations you already have and make new ones. That is why I recommend checking
Theme Park Reservation Availability before changing ticket dates to plan accordingly. Always be sure that the parks you wish to visit are available during your new travel dates, and make Disney Park Pass reservations right after changing your tickets.
I hope this information is helpful, Valeria! Come back to visit us if you have additional questions and have a magical visit to the Walt Disney World Resort!
Thiana