My problem is trying to "downgrade". I really want to try to new small cars (Focus, Fiesta, Cruze, Elantra). When there's a greeter at the bus (seemes all the time now), I always ask if I can pick out one of these cars from the other sections, but I'm always told I need to choose for EA or ES. What happens if I pick a compact and take it to the booth? Will they stop me and force me to pick a larger car?

BTW...when I book corporate travel, we're locked into the "intermediate" selection.