I have some unused tickets left over from my visit, can I use them another time? Tickets purchased in advance must be used on the day selected. Unfortunately we cannot validate or refund tickets not used. Related articles Can I change the name on my booking? Can I get a refund for my pre-booked tickets? Can I change the date of my booking? Can I cancel my booking? I am visiting on 17th and/or 18th March - Will you be open?