Of the 60,000plus members it seems like most visited WDW this past year without much hesitation, according to the activity on this board. I know this isnt a complete indicator, but it gives some kind of insight that DVCers dont like the idea of passing up on the annual or more trips.
In fact I am surprised at the number of DVCers who travel by car. We live in NC and always fly, in fact we flew 2 weeks after 9/11 to WDW. Call me crazy but it was our vacation, planned for 8 mos. ahead and Osama nor his moma was gonna stop us.
My point is I wouldnt be overly concerned about DVC resorts being any more booked than usual, although it still is a good idea to book as far in advance as possible.
Just my 2 cents worth.