We have stayed @ Le Chene Gris ( approx 15 mins to Disney ) in a static caravan : http://www.lechenegris.co.uk/

also Les Etangs Fleuris : http://paris-campsite.com/

there's Davy Crockett Ranch which is the self catering Disney accomodation : http://hotels.disneylandparis.co.uk/hotels/davy-crockett-ranch/index.xhtml

We did this a couple of years ago. Me, the wife and 2 kids.
We stayed at a relatively small site called Camping les Etangs Fleuris at Touquin.
You can find details at Canvas Holidays website http://www.canvasholidays.co.uk/campsite-overview.aspx?id=PP05T
We booked the site & ferry with Canvas and drove over. It is a very easy and straight forward drive from the camp site into Disney's carpark that takes no more than 30 minutes. We loved the fact that after a full days excitement at Disney we went back to the peace & quiet of the site to chill out. We spent 3 days at Disney including a day at the studios part. We also spent a day sight seeing in Paris by catching the train into Paris from the station at the shopping centre by Disney.
We then drove onto The Vendee and stayed at another site for week on the coast.
Brilliant family holiday all round.

Thank you.The site looks ideal. How long was the drive to the site once leaving the ferry? Is there a supermarket close by?

For your drive distance, you could look at http://www.viamichelin.fr

Here are the nearest 20 supermarkets to Touquin ... where there isn't a supermarket at all.

Atac (about 7 kms away)
RUE DE VILPRE
77540 Rozay-en-Brie

Ecomarché Podial (about 7 kms away)
RUE DE PARIS
77515 Faremoutiers

Podial (about 7 kms away)
14 RUE ROBERT MARTIN
77515 Faremoutiers

Intermarché (about 9 kms away)
126 RUE JEAN MONNET
77120 Mouroux
0164651010

Bouché Distribution (environ 9 kms)
8 BOULEVARD DE LA MARNE
77120 Coulommiers

Leader Price (about 9 kms away)
1028 RUE DU LIETON
77120 Mouroux

Intermarché (about 9 kms away)
AVENUE DE PARIS
77120 Mouroux

Intermarché (about 10 kms away)
5 RUE ABEL PROUHARAM
77120 Coulommiers

Fontenal Intermarché (about 11 kms away)
40 RUE BERTAUX
77610 Fontenay-Trésigny

Leader Price (about 13 kms away)
ZA DES 18 ARPENTS
77169 Boissy-le-Châtel

Ameadis (about environ 15 kms away)
2 RUE DU GENERAL LECLERC
77580 Crécy-la-Chapelle

Intermarché (about 15 kms away)
AVENUE DE VILLIERS
77580 Crécy-la-Chapelle

Atac (about 16 kms away)
RUE MARCEL SEMBAT
77390 Verneuil-l'étang

Atac (about 17 kms away)
RUE DE LA LIBERATION
77220 Tournan-en-Brie

Intermarché (about 17 kms away)
ROUTE NATIONALE 19
77720 Mormant

Supermarché Champion (about 18 kms away)
17 PLACE DE L EUROPE
77700 Bailly-Romainvilliers

Champion (about 19 kms away)
77390 Guignes

Intermarché (about 19 kms away)
5 RUE DU 19 MARS 1962
77370 Nangis

Supermarché Champion (about 19 kms away)
AVENUE DE VERDUN
77370 Nangis

Shopi (about 19 kms away)
29 RUE DU GENERAL LECLERC
77370 Nangis

I've given them all, because it may be simpler to go a bit further away for a larger store or a simpler route! Don't forget that big supermarkets sometimes have cheaper petrol than motorway service areas or small petrol stations ... and don't forget that Brie, Coulommiers and Meaux are famous for their 'Brie' cheeses which are locally made.

You are great - thank you. I will know who to ask if I need to know anything else

The bar/shop on site does some simple take away food, and you can order croissants, baguettes at the bar and they are delivered fresh from the patisserie in the village first thing next morning...lovely.