Daxx's Wife here. I just booked this ... I kid you not! Just got off the phone w/Disney CRO not but a minute ago.
Here's what Leonardo, the great man who helped me told me ...
It is a complimentary service that starts on May 5th (the day we booked to arrive, so we get to test run it!). It doesn't matter what airline you're on, according to Leonardo. CRO only needs your arrival and departure times, the airline and flight number (I think on flight #).
According to Leo, when you get off the plane, you take the shuttle to the main building where a CM will meet you. They do not meet you at the gate when you come off the airplane.
However, this service is not entirely complimentary. As I stated, there is no gratuity for the bellhop who takes your luggage to your room ... however, when you're leaving, if you call a bell hop, gratuity is NOT included. Not that that's a big deal. But, I don't want anyone to think that bellhop departure gratuity is included!
Your bus leaves 2 1/2 hours before your departure time. No ifs, ands or buts. Even if you think you only need 1 hour for airport time, they don't care. If you're not on that shuttle, you best be calling MEARS! While you head to the airport, they show a movie on the bus. The Disney folks will check your luggage in for you and you have no worries. Hakuna Matata, man!
I only booked hotel and was allowed to have the ME. As long as you are on property, it looks like it's available.
It's about time Disney came up w/something like this. Hey, if this "trial run" (which we think is exactly what this is -- in time, they'll charge for it), cool. Why should MEARS make all the $$ that Disney is losing out on b/c they're not running shuttles!??! However, if they're not competetive $$ wise w/MEARS, it won't work. I mean, honestly, I can schlep my own luggage ... if I have to pay a lot more than MEARS, I'll just use MEARS.