With an account on this site, you can manage and save your favourite attractions, shows and restaurants, etc. That way, you can go straight to them whenever you like, on the website and on the official Parc Astérix application.
If you already have a Parc Astérix ticketing account, you can access it here: billetterie.parcasterix.fr
Asterix and Obelix would probably have logged in using Facebook Connect. What about you?