Thinking of buying a Merlin annual pass. Now living in Lincolnshire so each trip will require a reasonable drive. Can anyone tell me how the pre booking works in practice. Can you book for the next day if the opportunity crops up. How frequently do you find that all pass holders tickets have gone. Can you book several trips in advance ? Will be using during off peak hours rather than weekends. Years ago we used to pop along to Thorpe park for 2 or 3 hours every weekend !