All users with a canceled ticket can request a refund of their amount if they do not want to redeem their ticket for another day.
Requesting the return of the amount of your ticket automatically implies the loss of the right to redeem, so you will have to buy another ticket. People who have already made the redeem will not be entitled to any refund.
You can request a refund from the moment the closure is announced until four days later (Art. 23 of Decree 10/2003 General regulations for the admission of people to establishments for public shows and recreational activities in Andalusia).