Can I upgrade my Chessington World of Adventures Annual Pass to a Merlin Annual Pass? Yes! Upgrade your Chessington Annual Pass to a Merlin Annual Pass to experience AWESOME at 32 incredible attractions! For more information, please visit here. Related articles Can I upgrade my day ticket to a Merlin Annual Pass? What perks do I get with my Chessington Annual Pass/Off Peak Annual Pass? How do I purchase Merlin Annual Pass Friends and Family tickets? Ride Access Pass: New for 2020 I used Tesco Clubcard to purchase my Merlin Annual Pass, what type of pass does this entitle me to?