Poohluvrs, there was something posted a month or so ago about how concierge guests are handled with DME. I'm not sure if I'm remembering the post correctly, but I think they said that when you arrive at MCO and check in with the DME representative, they call ahead to the resort and let them know you're on the way. I wouldn't imagine that they track the bus or wait under the Port Cochere until it arrives though. I would simply go to the bell services desk that's located near the drop off and have them call for you. Again, it's based on the resort as to whether you can go to concierge on your own, or need to be escorted by bell services or a greeter.
Garada, all the times that we've stayed at RPC, there was either a concierge greeter waiting for us, or one arrived shortly there after. It was very nice.
Tammi