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There is some info on the web site, but much of the info is available elsewhere. You can read info on all of the
DVC resorts including floor plans and a list of the items in each room (1B, 2B).
They have downloadable grocery lists that you can complete and fax to your resort ahead of time if you want them to stock your fridge before you arrive.
There is a list of all of the current DVC discounts available at WDW.
You can request ressies via email, although it is not realtime and they tell you it can take 48 hours to process.
Probably the most useful feature I've found is that you can sign-up for emails from DVC. They will send you the monthly and quarterly newsletters via email. They are also viewable on-line going back a couple of years.