Hi Brandy, and welcome to planDisney!
I can certainly understand wanting to be able to use any remaining days you may have left on a
Walt Disney World Resort theme park ticket, especially if they were purchased prior to all of the changes some years ago.
If the theme park tickets are still valid and have not expired, you can check your tickets via your
My Disney Experience account as long as they are linked. If the theme park tickets are linked, open the My Disney Experience app, select the three lines at the bottom right and choose “Tickets & Passes.” From there, you should be able to see any valid theme park tickets and the number of days remaining on each ticket. If they are not linked, you can show your tickets to a Cast Member when you arrive at the ticket windows at the theme parks, and water parks, the concierge desk at any Disney Resort Hotels, or Guest Relations at Disney Springs, and they will be able to check the number of days left. I hope this helps.
Please let us know how we can assist you further.
Have a magical time!
Raquel