We will be staying in the Montmartre area for a couple of days and wish to rent a car before heading to Luxembourg (the first stop on a Luxembourg/Germany/France trip). We plan to leave Paris early on a Tuesday morning and arrive in Luxembourg City by mid-late afternoon. There will be 4 of us. We will return the following week (at least by Wednesday) to have a couple more days in Paris before flying home.
Should we take a taxi to an airport to rent a car, or take a train to someplace like Reims to rent the car?
Perhaps if we arrive early enough we could do one site in Reims but we want to stay open to other short stops along the way. We figure that Reims is easily accessible by train for any Paris visit without a car.
Thanks.