The best thing about the pass was the train pass. We used it all day everyday we were there. I was disappointed that it did not cover the Eiffel tower. Also, there was no fast track for Versailles. We had to wait in line with everyone else. It was especially helpful for the Louvre, river cruise and Musee D'Orsay. The bus tour was just ok. The other tour with multiple routes is better, but not included. You are able to see everything on the other tour on your own with the train passes though. I am in the group that loves Paris and this pass helped get around easily.
Overall a good experience. My only complaint is that when we arrived in London, there was no way we could make the tour bus and stayed at the bus terminal for almost an hour before boarding the tour bus. It would be nice if the timing of the bus was better coordinated to when the train arrived since it is only a day trip. The river cruise was nice and the different routes were easy to navigate. We did not recognize that there are assigned seats on the train until the ride back, just FYI.