My daughter and I will be arriving on a Saturday morning at CDG. We want to take the train in. The place we are staying is in Zone 3. After we check in, we want to be able to explore the city on that day and on Sunday. Museums are free on the first Sunday so we don't need tickets for that. On Monday morning we will need to take the metro to Paris Gare Lyon to catch the TGV to Nice. So what pack should we get. Would a 2 day pass work for this? Do you buy them ahead of time or at the airport?
Mary