Yes, in 2026, both Walt Disney World and Disneyland allow guests to upgrade their theme park tickets to a higher tier or a more expensive pass, provided the upgrade is completed before the ticket expires or is fully used. For example, you can upgrade a standard 1-day ticket to a Multi-Day ticket, or add the "Park Hopper" or "Water Park and Sports" option by paying the difference in price. At Disneyland, you can even apply the value of a partially used multi-day ticket toward a Magic Key (Annual Pass), as long as you do so by midnight on the last valid day of your current ticket. However, there are strict rules: you cannot "downgrade" a ticket to a cheaper version, and the upgrade must be done for the same person who used the original ticket. In 2026, most upgrades can be handled directly through the My Disney Experience or Disneyland app, though some complex "unused ticket" transfers still require a visit to a physical Ticket Booth or Guest Relations window. It is a "pro-tip" to upgrade early in your trip; if you decide on day two of a five-day trip that you want to "hop" between parks, you will still pay the flat upgrade fee for the entire duration of the ticket.