We used this to go from Marseille to CDG. Personally, I would not use them again as it is similar to lets say Eurowings etc versus Lufthansa. If you do use it on this route DO NOT get off at the first stop in the Paris area as that is for Disney etc as CDG is about ten more minutes. If you make the mistake, you can reenter their facility with your ticket and catch the next train to CDG.