I did have a Cayenne recently. ^

TO THE OP: In answer to your question, use the FCT just like you would for any other destination. Your personal assistant will guide you through the extra security procedure which happens right before you depart the FCT for the flight. As Rambuster noted, the "van" is almost always for the TLV flights because there tend to be a whole lot of HON on those flights.

Last time I was there, there were three (3) full vans-- and those were only the ones that I saw-- there could have been more!