Hi Twinton,
The number is 0033 160 30 40 50
All you need are the time you wish to dine, the restaurant, number of diners and your name.
I made some reservations this afternoon, just to confirm what has been discussed in another thread - the latest restaurant time I could have in the park was 5.45 pm at Walts on a Saturday when the park is closing at 9.00pm.