Originally Posted by
bayoubabsy
My question is this: For the Sunday that I arrive, when I purchase a one-way ticket on the RER, is it good only for the train? Would it allow a transfer to the metro at Gare du Nord or Chatelet, or would I have to get a separate metro ticket at either of those stations for the transfer?
From what I saw today - and this was at Invalides - there was one gate to get into the Metro and RER, and then you went down this hall or that hall to get to the platform you needed. Also, coming back from Versailles, I thought I saw people disembark our RER train and head for a Metro platform without scanning a ticket or passing a gate.
Double check this, but I think you're okay. Enjoy!