We will be taking a day trip to Versailles from Paris in July. We will be staying at Hotel Napoleon on Avenue de Friedland near the CDG Etoile Metro station.
Where would we buy round trip RER C tickets, and are they for a specific date and time or for any date and time?
Can they be purchased a few days before or do we buy them the morning of our trip?
It looks like we could take the Line 6 Metro from CDG Etoile to Bir Hakeim and then walk underground to RER C Champs du Mars. Is that a good way to go or would you recommend another way?
Do you put the ticket through a turn stile at the entrance and exit and use the same ticket for when you return or show it to someone on the train?
Is Chateau Versailles Rive Gauche the stop we want?
Then how would we walk to the Chateau at Versailles from the train station?
I appreciate any help you have to offer.