To enter the car park with a different credit card than the one you have paid with, you can nominate a different card at the time you make your booking:
If you have already made a booking and would like to nominate a different credit card for entry to the park, you can amend your existing booking by either logging in to My Account
or Manage my Booking
. Changes to your booking can be made up to 2 hours prior to your booked entry time.