How to get mugged in the sterile area of an airport

We are paying $8 plus for 24 hours of 802.11g internet access in the airport terminal. I may ultimately use about 10 of those hours, given last night's weather. But couldn't SBC sell their connectivity in realistic increments?

Who in an airport would order 24 hours of WiFi unless he's setting up a kiosk to sell fake Rolexes?