Do unused days on tickets expire?

[Candace]

I have three 3-day, 2-park tickets from 1998. Only 1 day has been used on two of them, the other is still new. Are these tickets like Disney's parkhoppers? Please tell me they are still good! Thanks

 

[BarryHom]

Unused days on those tickets never expire.

 

[Candace]

Thank you, Barry!