[masterchef]

How many rows do Alamo occupy?

There are 22 different vehicle types listed on their site but no more than 6 or 8 rows?

The chances are that, apart from Luxury and elite models where the keys will be in the kiosk, there will always be a mix of models in any row. You are entitled to take any vehicle in the row, but even if you stray into the next row up and the keys are in the car you can help yourself. The guy at the exit will not care and you will not be charged any different rental.

Never pay for an upgrade as they are, more often than not, freely available.