Do Season Passholders or Merlin Annual Passholders get any discount for Tree Top Quest? There are not any discounts available for Tree Top Quest for Season Passholders or Merlin Annual Passholders. You can book your tickets to enjoy the experience here. Related articles What is Tree Top Quest? Does my Merlin Annual Pass/Merlin Monthly Membership allow me entry into the Alton Towers Dungeon? Is Fastrack available? Is entry to Oktoberfest included for Merlin Passholders? Are there restrictions for using a Standard or Premium Merlin Annual Pass at Alton Towers Resort?