They met us right at the gate, took us off to the side to check our paperwork, then escorted us right to the front of the line. Very busy the Saturday before Christmas, wait at immigration was well over an hour.
Info is on vipattractions.com, send them an email. They will call you to arrange payment.
You can check flights using flightstats.com, but info is only available for that day and the next two. You can get the arrival service booked on short notice.