I will be at CSR next week for a convention. I have never used any of the shuttles to get to the airport. Renting a car is out because it is work. What shuttle service will get me to the airport quickly? I need to stay at CSR until 11:00 and I have a 12:30 flight. I can't miss the flight because I am flying home for my son's high school graduation. Any suggestions and the cost would be appreciated. Thank you.