Alamo is the car renting place on Disney property and if you want one for one day it will probably be about $75. I work at UPS and get a discount with them because of that and you maybe could get a discount too depending on where you work. We have always taken the Magical Express but now that flights are so outrageous we decided to not go to MCO and we're going the route you're going. I can definitely tell you that the shuttle service from Sanford is SUPER expensive. When I asked them the price it was more than a flight and that's just one way! You should definitely look in to Alamo.