I use National at MCO alot. I rented 6 times this year and can choose from both emerald and executive aisle. I have not see a minivan on either aisle and on either side of the airport (A and B) all year. I also check the aisles when dropping off on my return back to the airport and nothing. Heck, I've not gotten anything bigger than full size (actually a Taurus 5 of those times) this year and we tend to drag our luggage from side A to side B if we don't like the choices on the first side. If anyone needs a minivan, they can't rely on the aisles to have one. In the past we would find one about half the time, but this year the aisles are more designed for the business travellers (as intended). We leave next Thursday, so I'll certainly post back on the "what's available" tread what I see.