There are basically four ways to get to DLP from CDG. Here are some excerpts from a certain forthcoming book I happen to know about (

):
The
VEA Navette shuttle offers a direct service from CDG (all terminals) to the hotels of
Disneyland Resort Paris from 8.30am-7.45pm daily (until 10pm Fridays and Sundays). It is a fairly plodding coach service, taking a good 45 minutes to reach the first stop, but it does have the great benefit of being door to door as far as the hotels are concerned and runs at 20-40-minute intervals throughout the main part of the day. It costs 14 for adults and 11.50 for children 3-11 (under 3s free). To phone the VEA service in advance, call 33 1 64 30 66 56. Using CDG2, from Halls 2A and 2C, head to Gate A11/C1 to pick up the shuttle; at Hall 2B and 2D, go to Gate D12; and at Hall 2F, look for Gate 0.05.
Alternatively, you can take the
RER service on Line B all the way in to Châtelet les Halles (about 40 minutes), then change there for Line D to Marne-la-Vallée (another 35-40). It is a simple enough route at off-peak times, but much harder to negotiate with luggage in the morning or evening rush-hour.
There is another alternative of a direct
TGV train link from the airport to Marne-la-Vallée, which can work out slightly cheaper than the VEA shuttle (although the services are fewer). There are 10 trains between 6.51 and 11.19 in the morning, then basically one an hour from 1-6pm, and another 12 up to 9.34pm. At off-peak times, the ticket is 12.90 one way, but it rises to 19.90 at peak times. The big benefit, though, is it takes just 15 minutes, and you can walk out of the station to pick up the shuttle bus to any Disney hotel right outside. For the return journey to the airport, there are 13 services between 8.12am and 12.45pm, then another 12 from 3.01-10.16pm. (Be warned if you miss the Charles De Gaulle stop, you will end up in Lille or even Brussels!).
You can also get
taxis outside all the terminals, although it will cost around 40 one way to any Disney hotel.