PARK FEES
Big Bend State Park and Big Bend National Park have separate visitor fees.
One is the State of Texas, the other is National, so park passes are not interchangable.
Please review the website for the Park you’ll be visiting, and tell them what your plans are, and they can explain what fees to expect, and how they should be paid. Credit Card vs Cash
Big Bend National Park
432-477-2251
https://www.nps.gov/bibe/planyourvisit/fees.htm
Big Bend Ranch State Park
432-424-3327
https://tpwd.texas.gov/state-parks/big-bend-ranch/fees-facilities/entrance-fees/