What's PREDA? PREDA is a heart-pounding limited-time maze, adding an extra layer of thrills to the season’s most chilling event, Gardaland Magic Halloween! Was this article helpful? Related articles Is the PREDA experience included in the admission ticket, season pass or Gardaland Club membership? Who is not admitted to PREDA? What are PREDA's opening dates? Are there any age and/or height limits to access PREDA? Is admission free on your birthday?