Sure your not talking about the new welcome centre, that's where you describe, with a private viewing area for ACO members.
I don't recall seeing any tents there last year.
Ah, I may be mixing up my ACO areas then
Looks like this is new for 2010, and where landman suggested it was:
"//NEW IN 2010 :ACCESS TO THE PASSION 24 CAMPSITE AND PARKING AREA
during the "24 Heures du Mans". Benefit from a private parking area and campsite, exclusively reserved for Passion 24 VIP and Gold members, situated at only a short distance from the space reserved for concerts, the Espace Privilège Club ACO and the track !"