the liber-t works well, but not much cheaper unless you're on some monthly scheme and using it every day for work (bit like an oyster card i guess; not much benefit if you live in manchester)
route wise i can't help much either; i leave after work, last train to calais, drive to paris, stay in a mates hotel, then next day drive to my aunties in montpellier for a late lunch, and on to monaco for dinner and a couple of days with friends/family.
the return leg i drive straight up through lyon back to calais; far more boring (the roads from orlean to montpellier are fantastic and i never get bored driving along hte coast to monaco from there) but very quick; can consistently do monaco to calais in 10hrs without particularly breaking the speedlimit
we're planning a similar trip for an autumn holiday this year, except we're going to head home throuhg germany and stop in leuven and bruges for a day or two on the way back, hopefully taking in the porsche museum en-route
b
ps.. i think there is a safer way to get a liber-t thing than sending cc info via email; i will speak to my rel's in france and see what they can tell me sometime this week

