If there is a barrier, to open it when entering the parking, you have to collect the ticket. Then you go to the control cabinet and you show the operator the mail with the confirmation of the reservation that they sent you by email after having made your reservation. The parking employee will inform you of how to get in and out of the parking during your stay and, if necessary, he will give you the means to do it. If there is no barrier, you have to go directly to the control cabinet of the parking.