Can't help with Disney, but as regards your week in France, if this is your first time, you're in for a very pleasant surprise.We always travel Dover Dunkirk by Norfolk line, cos its cheap, good and the port is convenient for our first stop at Camping La Chaumier, near St Omer.From there the choice is yours, but wherever you go, you'll enjoy la belle France.
A bus service runs regularly fom the site direct to Disney.
The campsite sells discounted tickets for Disney at reception.
The site is within a much larger park with a lake, beach, walks, horse riding and a resturant.
There is an entrance fee for Non Campers so at the pay gate just say you are going to the campsite and they will let you in without charge.
You will then be given a swipe card at the campsite to use an electronic gate at another entrance.
We are staying (where we have stayed several times before) at Camping d'Ile de France, Champigny sur Marne also known as Camping Le Tremblay. 20 mins by train to Paris Centre, 20 mins to Disney. Bus runs from site to railway station at Joinville le Pont every 20 minutes. There is also a bus to Eurodisney from the site which is best booked in advance. It is more economical to buy a tourist ticket for travel on the train and buses (available from the site office). Both Eurodisney and the campsite can be booked online. Hypermarket 10 mins by car along the A4. English spoken.