I was planning to use EA with National later this week at MCO, but the introduction of "Emerald Executive" aisle stuffed with all the Full Size cars & SUV's has me spooked that I won't get anything other than a Grand Am. I also am an Avis Preferred customer and can usually counter bypass with them as well. I was able to reserve a FULL size car with Avis and get excellent rate with $15 coupon that can be "doubled" to $30. Has anyone used the doubles promotion at MCO? Do I have to visit the counter to present coupon and "ask for doubles"? Or can I bypass counter and submit coupon when I drive car through security? Or perhaps ALL preferred rentals at MCO need to visit the counter anyway - if so how fast are the lines for preferred? I'm arriving middle of the day on a Friday so I don't want to get slowed down if lines are usually long at busy times.