Please follow the purchase flow below if you have a promo code.
Go to the resorts reservation website.
Choose 'Reserve with New Parking Code' to add a new code to your account.
If you already have a code on your account choose the button that says 'Reserve with Existing Parking Code'.
After clicking that, your code(s) will appear and below will say 'Reserve'.
You can then choose the appropriate code (if you have more than one), and then 'Reserve' from there and it will land on the calendar and display your rates available based on the code associated.
The resorts all release reservations at certain times.
If the date you are looking at says 'Sold Out' please check back at those times to see more availability.
Or you can contact Park directly Contacts for Ski Resorts.