Used the Emerald "booth" at GSO over the weekend and got great service.

Here are the types of cars they had available in the aisle:

Malibu/Impalas
Camry
Sonata

I went with the Sonata and prepaid the fuel. It was extremely fuel efficient, and I used less gas than I expected. When I returned it, the customer service rep changed my prepay option to a half-tank. Outstanding!

I'll report on my EA experience at CAK after I visit there later this month.