Senior and/or NonResident Passes - Western Trip 2019

You might want to check this out:

Senior Lifetime Pass
$80
Lifetime pass for citizens or permanent residents of the U.S. age 62 or older. Proof of age and residency required.
50% discount on some expanded amenity fees like camping fees.
Additional Details

I Got mine before the last increase— it is Lifetime.
Discounts vary, esp if vendor operated, but you should ask.