Hey there, Joshua!
Wishing you the warmest welcome to planDisney! Thank you for coming by with your question!
I am so pleased you are planning a family trip with your sister and nephew! He is going to think you are the coolest uncle ever! And please don’t worry if your plans have changed! It is so easy for you to adjust your dates and take your magical vacation to the
Disneyland Resort when you’re back in town! To modify your
Theme Park Reservations, please log in to your Disneyland Account select "My Disneyland" then click "Ticket and Reservation Details" and select "Cancel Reservation" for each person in your party. After you receive the confirmation of cancellation, you will be able to book a brand new theme park reservation for your desired date. Theme Park Reservations are limited and subject to availability. So, please check the
Availability Calendar to make sure your desired date and theme park are accepting reservations for your ticket type on your new date.
Canceling your Theme Park Reservation does not trigger a refund. That’s because theme park tickets are valid for a future visit through the end of their expiration date. But, even if you're unable to visit before your tickets expire, there is still no need to fret! According to
eTicket Terms & Conditions, unless otherwise stated, the amount paid for any wholly unused, expired Disneyland Resort theme park ticket (with the exception of Special Event Tickets) may be applied towards the purchase of a new theme park admission ticket at the current price. Simply go to a Main Entrance ticket booth when you’re ready to visit and ask a Cast Member to apply your eligible ticket amount towards a brand new ticket purchase.
I hope this information is helpful! Please head back to planDisney if you have any more questions!
Tiffanie