The one other advantage of DME is their passengers are given priority of room assignments at the resorts.
Specifically:
- When you book ME, you flight info goes into a ME database.
- The moment your flight lands in Orlando, the ME system -- which is tied into airline systems -- automatically sends a message to your resort, alerting the room assigment CM that you will be arriving at their resort within the next few hours.
- Per current Disney policy, the CM must then immediately review which rooms will be coming available within that time, and assign you one of them. This is designed to insure that you will be able to go right to your room on arrival.
Disney implemented this policy back in June, presumably in an attempt to raise the satisfaction levels of ME users (after all the start up issues and related guest complaints in May).
Consequently, those showing up at the same resort on their own (ergo, not using ME) are now getting pushed into the back of the room assigment queue, and are much more likely to have to wait (often until late afternoon) to get into a room -- and often one that is in the "leftover" category (less preferred locations/views, etc.)