Online booking is still recommended so that we can manage daily numbers.
When you buy your ticket, you will need to choose a date for your visit. Your tickets will only be valid on this date. If numbers allow it on the day and you have forgotten to buy your tickets online, you may be able to buy them when you are here.  Unused tickets will no longer be valid.

To use Sodexo/Edenred/Frameries/Sport et culture vouchers, you can buy your tickets directly from the ticket office on the day of your visit.