If you are trying to park in the economy longterm lot, it is sometimes full on the holidays. The last two times we tried we went to the economy lot(a little tricky to find) and it was full. An attendent there gave us a ticket and told us to go to the parking garage. With the ticket we still got the economy rate. That was a treat. We've also used Pacifico. You drive the car to their off site lot, an attendent then drives your car to the airport and helps unload your luggage. On your return, you call the number when retreiving your luggage and they drive the car to the airport, return to Pacifico, and then you are on your way. We've never had any trouble with this procedure(Well actually one time they were looking for us at the wrong terminal and we saw our car pass us but they just drove around again and we flagged them down)