Parking limited to 48hrs. Limited parking space with 8 official spaces for vans plus maybe a little camper, parking very close to each other and not really suitable to vans over 8 metres
Access is via controlled barrier. Code is available from reception in the 'Centre International de Sejour' which is accessed by a path that goes out the back of the services area by the barrier, round right and into a building with Welcome in lots of languages round the roof. They don't check if there is space, so if the van is big or you aren't confident reversing, go as far as the coach spaces and walk down to see first.
Very convenient for Reims centre, within 15 minutes walk of the Cathedral.