If you are in Paris and want to spend a day in Disneyland, then the Disneyland Paris Express is the best solution for you. The program includes the bus transfer between downtown Paris and Disneyland and a 1-day/2-park ticket to Disneyland.
Departure and arrival locations in Paris:
Gare du Nore (8, Boulevard de Denain, / metro 4,5 and RER B,D also stop)
Departure from Paris in the morning: 8:15 a.m.
Departure from Disneyland in the evening: 9:00 p.m.
Eiffel Tower
Departure from Paris in the morning: 8:30 AM
Departure from Disneyland in the evening: 9:00 PM
Opéra (8, Place de l'Opéra, / metro 3,7,8 and RER A also stops)
Departure from Paris in the morning: 8:35
Departure from Disneyland in the evening: 9:00 p.m.
Chátelet (1 Place du Chátelet / metro stops 1,4,7,11,14 and also RER A,B,C
Departure from Paris in the morning: 8:55 a.m.
Departure from Disneyland in the evening: 9:00 p.m.
Arrival and departure location in Disneyland: Disney bus parking lot (approx. 5 minutes walk from the entrance to the Disney parks)
The trip there - back 50 EUR / person + the Disney park entrance for the day