Lewisc said:
Disney representatives will pull their bags and wait for the Guests arrival before forwarding them to their resort hotel
If the hooks are in the system to hold Magical Express luggage at the airport until it is matched with an arriving passenger, then it's highly likely that the same mechanism will be used to enforce the "no luggage only transfers" rule.
Earlier today, I spoke with a DVC Member Services CM who has been trained on Magical Express. I asked what would happen if someone tagged their bags with Magical Express luggage tags but then chose not to ride a Magical Express coach. She explained that luggage would be held at the airport until the arriving guest confirms their arrival with Disney at the airport.
Of course, that raises the question of whether a guest could check in with Disney at the airport, and then run off to a rental car or towncar.
If I were designing the system, the check-in at the airport would be very simple. Guests would be directed to the right coach by signs and CMs. Then, guests would just have their Magical Express coach tickets scanned or swiped as they get onto the coach. That would allow guests to go straight to their coach without standing in another line first. And it would ensure that guests get onto a coach to the right resorts (just as today's airline boarding passes ensure that passengers get onto a plane to the right destination). And it would update a database that tracks all steps of Magical Express guests and their luggage (just as FedEx tracks packages).
Of course, I didn't design the system, so I can only make educated guesses about how it will work.
Disney knows that a typical family that uses the Magical Express coach service is likely to spend many hundreds of dollars more with Disney than a typical family with a rental car. So Disney has a real financial incentive to enforce the rules. Otherwise, Disney is burdened with the expense of the luggage transfers, without the enhanced revenue to offset that cost. (Sure, some Magical Express coach-riding families will still rent a car for a day or two to go to Sea World, Universal, Orlando Premium Outlets, and off-site restaurants, but most won't bother.)