Will you survive if you get a midsize? If not, I wouldn't gamble. If you will fit, but just be a little more crowded then I would go for it.
Look for the EA report thread on this board and it will give you an idea of what folks see at MCO. Also, remember that EA is marketed to business traverlers. We don't WANT Mini vans and lots of us are starting to turn down SUVs. (I won't take one anymore after two of my coworkers had laptops stolen. The rental car company mini vans rarely seem to have the "cover" over the cargo area and I won't leave my laptop sitting there exposed!)