Has anyone tried this? I have a Standard Class rental car reserved at Alamo TPA, car type says Buick Verano or similar. I also have a Premium Class rental reserved at the same time, car type is Nissan Maxima for only $80 more for the week. My plan is to wait until I get to the garage before deciding which one to take. Here's why, I'm NOT sure what a "standard" class rental car is and what vehicle I'm likely to end up with. On the other hand, I'm NOT sure what a "premium" vehicle is either. I'd be willing to spend the money for a truly "Premium" vehicle. I plan on doing the online check-in to avoid the counter and just walking to the vehicles. Then I can compare vehicle types and decide which one to take. Has anyone ever done something similar? How did it work out for you?