I won’t necessarily have a eurorail pass. I am flying into CDG and stayying the rest of my time in Paris (except for a possible trip to switzerland or south of France to ski). Would it be best just to buy the individual tickets or the weekly pass (can I get anywhere I need to go in Paris? i.e. on RER lines) or should I get both weekly passes and a eurorail pass. Also, is it easy to get these passes from CGD airport? Thanks in advance!
Ryan