A long$-$term parking facility close to a major international airport serves both one$-$time customers, who use the facility from a few hours to several weeks and pay for one use at a time, and long$-$term customers, who pay a monthly or yearly fee to be able to park at the facility at any time without any additional cost. The long$-$term customers are always guaranteed a parking spot available, regardless of their time of arrival. The fees charged for the parking service can change at any point in time, but paying a year in advance guarantees the price for that time period.