How do I use a return ticket on the Paris metro/RER? For example, I want to go to Versailles from Gare de l'Est. I understand that I can buy a return ticket. So do I hang onto the same ticket and use it on the return trip from Versailles?
How do I use a return ticket on the Paris metro/RER? For example, I want to go to Versailles from Gare de l'Est. I understand that I can buy a return ticket. So do I hang onto the same ticket and use it on the return trip from Versailles?