I just emailed Disneyland Paris today with a query regarding facilities, and am disappointed to be told that motorhome parking is not permitted "for safety reasons"!!
I've looked at several forums online which seem to contradict this!!
Anyone been recently that can confirm? It would seem that the official line is they're not permitted but the reality appears to be very different- i.e. overnight parking with toilets, showers, waste disposal for €20 per night and free to annual pass holders.
We planned on going in June and as we only intend spending 1 day in Disneyland, we won't bother now if it's not possible to park overnight.