For all who are saying a Dining Reservation CM would never do this, you are mistaken, because one did it for us. I do tend to hope that it's a special thing and that it doesn't just happen everyday, but it was seriously a bit of Disney magic for us.
We were trying to get dinner at CRT for our wedding night, and couldn't get a table for 2 no matter what. We were calling every day, several times a day, even our wedding planner had no pull there.
Finally one day I got a reservation-fairy-godmother who heard the story, put me on hold, talked to her supervisor and booked us a table for 3 in the last time slot of the night. She told me to call and cancel the 3rd person 72 hours before our meal - and not to forget!
I did what I was told, wondered if I should feel guilty about it, and then made a note in my bridal planner to cancel the 3rd person. (We originally listed her as my future mother-in-law!)
The staff at CRT was not surprised to see us in Mickey Groom ears and full-on bridal hair and tiara and we dined there, just the 2 of us at a table that could have accomodated 4, on our wedding night. The Fairy Godmother actually made some crack during her spiel about us "having to come out to eat" - THAT I did not appreciate.
Like I said, though, that was an exception for us and a very special night, so I know it does happen but I never thought of doing it myself.
Jennifer
Disney bride in 2006