We purchased the Paris Pass and plan to travel to-and-from our hotel near Disneyland Paris for 3-days. What is the best ticket to purchase and how much does it cost? Any other tips for stations we should get off at, and which ones to avoid?
The simplest answer I could provide is a 3-day 5 zone Paris Visite ticket will cover you for all transport between Disney and Paris central and costs 53.75€ per adult and 26.85€ per child 9 & under. Unfortunately I don't have a better answer for best ticket as it depends on ages, sights you'd like to visit, day of arrival, how much walking your party can handle / how many one-way trips per day you'd intend to make, etc.
In terms of stations, the most central station in Paris would be Chatelet les Halles which is close to the Louvre, the Seine and then Auber just west is close to Opera house. Further out west is Charles de Gaulle Etoile station which is at Arc de Triomphe and Champs Elysées street for shopping. On the eastern side of Paris the station of interest I think is Vincennes which is beside a medieval castle, Chateau de Vincennes.