The call center told me that the carnet is valid for bookings in class V in all Europe excluding France, and in class N in France.
As far aas I know V is one of the cheaper classes (not deep-discounted but cheaper than M and Y), so I am not quite sure of how much availability one would find, and what would be the price difference to upgrade to higher classes.
Last edited by alesfo; Aug 26, 2013 at 2:03 pm