In September 2009, I traveled to Houston, Texas. I made all my arrangements through Travelocity. I booked my flights, hotel and transfers through them. The only shuttle service offered was Super Shuttle, so I booked transfers both from the airport to my hotel on September 11 and from my hotel back to the airport on September 13. Everything was prepaid, and I printed out both of my vouchers for Super Shuttle transfers. I arrived at Houston's George Bush Intercontinental Airport on September 11 and after presenting my prepaid transfer... read full review »