Deb, we had a good experience with our luggage last year, we collected it at first baggage claim and then left the rest to Disney. We did our first two nights at ASMusic as you know, I think we waited ten minutes for the bus to leave, and we stopped at Coronado Springs first. We checked in at Music and went down to the bar for a cocktail or two as you do, and by the time we got back the luggage was there, so I would say an hour after us arriving at the resort, the luggage was in the room. As Paul says just give Member Services a ring and let them know you want to add Magic Express to your booking, they will need your flight number. The ME pick up is on the ground floor, at the very far end, to the right I think, there will be nice Disney people with big Mickey hands to wave you in the right direction, you then check in at the poduim and they tell you which queue to join. We have done this twice on our arrival (always have a car by the time we go back to the airport) and have booked again for this year to take us to Saratoga. Last year our driver insisted on us doing a quiz on the way to the resort rather than playing the video that they normally show, I felt a little sorry for him, his English was poor, and the people on the bus made a bit of a mockery of him, I hate things like that, so it made me a little unconfortable, he was only trying to be pleasant.
but again we walked straight to the front. There is a CM at the end of the line checking your ticket and they tell you which coach to get on. We waited on the coach for about 10 minutes before we left during which time another 6 - 8 families got on. 
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