UPGRADES: A Guest wishing to upgrade to a Passport from another form of eligible Theme Park admission media must upgrade on the same day in which the original form of Theme Park admission media is valid. A Guest who chooses to upgrade to a Passport from another form of eligible Theme Park admission media must choose a Passport of equal or greater value than the original Theme Park admission media retail price, and the difference in prices shall be due on the day of the upgrade. If an upgrade to a Passport is made from a multi-day ticket, the Passport will be backdated to begin on the first day that such ticket was used; if an upgrade to a Passport is made from a lower level Passport, the new Passport will have the same expiration date as the original Passport. Each guest wishing to upgrade his/her ticket media to a Passport must be present at the time of the upgrade transaction. Fully used ticket media, complimentary ticket media (except for certain promotional tickets) and ticket media stating its ineligibility for an upgrade may not be upgraded to a Passport. Upgrades are subject to Passport availability. Downgrades are not allowed.