You may cancel a reservation only if you have not already printed the admission pass. 

To cancel and reschedule your reservation for a specific attraction, take the following steps:  

  Log in to your Discover & Go account  

  Click on the "My Reservations" link  

  Click on the "Cancel Reservation" button  

  Go back to the "All Attractions" view and immediately reschedule your reservation for an alternate date  

  PLEASE NOTE: You cannot cancel a reservation if you have already clicked on the "print/download" button. We strongly recommend not clicking the "print/download" button until right before your visit. That way, you always have the option to cancel.  

  Here is more information on canceling passes: https://youtu.be/DT8ayGjefAU