To find out whether you can get a discount on a Plopsa ticket with your annual pass, first check the website of the amusement or animal park where you have a annual pass. There you can find a discount code that allows you to order a discounted ticket via this link. The discount is calculated on the price of a standard ticket for an adult, not on the price of tickets by date. The discount is valid only for the subscriber himself, any accompanying persons cannot avail of this offer.