Originally Posted by
benzguy80
I'd take the Metro in Paris between the stations since you will likely have time and are sufficiently ambulatory.
Metro T+ tickets are very cheap (1e60), good for 90 minutes on Metro subway, RER trains (within Paris) and RATP buses.
bonne voyage,
benzguy80
To clarify, my understanding is that a Metro ticket is good for one entrance to the Metro system. Time has nothing to do with it-you can ride all day if you want but once you exit the system, that ticket is done.
Also, in a recent change, I think you can now use one ticket on 2 or more bus rides, as long as it is within a certain time (perhaps 90 minutes). I don't know but I doubt you can go from Metro to bus or vice-versa on the same ticket.