We booked 3 vehicles from Alamo Aug 16-30. We got a great rate of $380 total for the two weeks for each vehicle. Now one part of the group will be arriving on the 15th. When I checked to dook the additional day, I got a rate of $529 But a single day rate was $40. So, how much of a problem will I have if I walk to the counter at 10:30 pm on the 15th and say I would like to pick up the car 10 hours early? My though is if they try and charge me an outrageous rate, I will just walk down the aisle to another rental company, rent a vehicle for one day, then come back on the 16th and pick up my alamo reservation. I have to go back to the airport anyway to meet the other members of the group. What do you think?