Marne-la-Vallée Chessy is a combined station serving both commuter RER trains and high-speed TGV/Eurostar services. Because it functions as a major gateway to Disneyland Paris, the layout is designed for high-volume foot traffic, but it can be confusing for first-timers who do not realize it is split across different levels.
Think of the station as having two distinct zones. The RER commuter trains (Line A) arrive at the lower level, where they terminate. This is the most common arrival point for visitors coming from central Paris. When you exit these platforms, you will head up to the main station hall. In contrast, the high-speed TGV and Eurostar trains use separate platforms located on a different level. These long-distance platforms are physically distinct from the RER area, so if you are transferring between a TGV and the RER, you must allow yourself time to navigate between levels via the central escalators or elevators.
The station is straightforward with only a few main platform areas, but the sheer number of people can make it feel larger than it is. Because the RER is a terminal line, you do not need to worry about the direction of the train—all trains departing from the RER platforms are headed back toward central Paris.
For navigation, follow the clear overhead signage marked with the Mickey Mouse icon or the "Parcs Disney" text. If you are arriving with luggage, the station is fully equipped with elevators and escalators, though they can become crowded during peak park opening and closing times. If you are transferring, budget at least 10 minutes to move between the high-speed platforms and the RER zone, especially if you are unfamiliar with the station’s layout. The main station hall serves as the central hub for all services, including ticket offices, information screens, and access to the Disney Village and park entrances. By staying mindful of the level changes, you will find the transition from your train to the magic of the parks to be efficient and simple.