ARRIVAL: Take a ticket. Park in any free space. Go to the office with your reservation and the ticket. The car park staff will park your vehicle for you. If there is no-one there, ring the intercom.
DEPARTURE: Use the card/device the staff gave you.
IF YOUR BOOKING ALLOWS UNLIMITED ENTRANCE AND EXIT: Use the multipass card/device the staff gave you.
120 Rue de Clignancourt