I don't often disagree with Dean, but I think you completely miss the boat here...
1) In terms of dollars, I think any "savings" would be minuscule.
2) In any case, Disney doesn't really care how much it costs to administer. We pay those costs. In fact, the more we pay to administer, the higher Disney's management fee
3) I think people who book longer trips think most people book longer trips, and vice versa. I doubt any of us have any actual data on the number of people booking short trips. But keep in mind that one of the great appeals of DVC is the ability to book short trips. I'd never buy a traditional timeshare, since I couldn't stay anyplace for a week. I bought into DVC because they allowed it. I