ARRIVAL: Take a ticket. Park in any free space. Go to the office (level -1) with your reservation and the ticket. 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.
Rue de Bercy 193
Quai de la Rapée 58