To use your Rainy Day Promise visit, hold on to the ticket you scanned to enter the Park on your original visit. Bring it back with you, along with your ID, for your return visit and head to the outside Guest Services window. There, they will verify your tickets and provide you with a pass for that day.
If you’re unsure whether your visit qualifies for the Rainy Day Promise, check the Rainy Day Dates here for the days it was enacted. Please allow 48 hours for Rainy Day dates to be added to the list.