Using "vintage" or old Disney tickets is still possible because Walt Disney World famously honors all unexpired theme park tickets with remaining admission days. If you have old "Paper" tickets or "Key to the World" cards that do not have an expiration date (common with tickets sold before 2004), you must first "convert" them into a modern digital format. You can do this by bringing the physical tickets to any Guest Relations window at the entrance of the four theme parks or at Disney Springs. The cast member will verify the remaining days and link them to your My Disney Experience account, which then allows you to use a MagicBand, a modern RFID card, or the "MagicMobile" service on your phone to enter the parks. It is important to note that you still need to make a Theme Park Reservation for the date you wish to visit, even with an old ticket. If you are unsure if your ticket has remaining days, you can call Disney's ticket research line at (407) 939-1289, but having the physical ticket in hand is the most reliable way to ensure a smooth transition to the current digital entry system.