For a tailor-made group visit, and if you use a method of payment other than credit card, please make your booking three working days before your visit at the latest via our booking form. If you can pay by credit card, and are only buying tickets for 10 to 100 people, or more than 7 people with disabilities, you can take advantage of the group rate on our online ticketing service and buy your tickets without specifically having to plan your visit.