A credit card number is required upon reservation. The payment may be made within two days prior to your arrival.
If you book an accommodation at the Parc, you will be given better rates for the admission of the Parc. Your entrance tickets are valid for two days: the day of (you can visit the Parc from its opening in the morning) and the day after (until the Parc closes).
You have to show your lodging booking upon your arrival at the admission.