I had an intermediate reserved with EA class for my upcoming trip. I got to thinking that we might do better with a minivan so that we can fit all of our luggage (4 adults). I called and upgraded to the minivan, now I have Emerald Reserve. Was this the right thing to do? Would I have had a shot at a minivan with EA anyway? It is my understanding that it works the same way as EA in that you bypass the counter, but what if there are no minivans? Do I get charged less? Thanks for any advice!