Euro Disney Paris

Go to google and enter
disneyland paris offres promotionnelles
Plenty of offers including from Disneyland.

The best value tickets used to be the direct trains from Gare du Midi which had accommodation included in the price.

I would suggest 2ememain or facbook market place.

https://www.2ememain.be/q/disneyland+paris/#Language:fr-BE

I number of people got free passes they can no longer use due to an issue on the 27th of September.

eg https://www.2ememain.be/a/tickets-billets/reductions-cheques-cadeaux/m15...