Dawn,

I have never spent more than 10 minutes in line waiting to go through customs. They ask you a couple of questions, stamp your passport and you head to baggage claim. Usually when you book a car they ask for your flight info. In that case they will know what flight you are on and if it is delayed. Since I travel stand-by, I often arrive much later than when the car is rented for. Unless they are closed, there is no problem.

Michele