Shelley,
Let me see if I can help you with some workarounds!
First off, park maps. You might find the site
www.willcad.org of interest. From this site you can download PDFs of all the four park maps, all the resort maps, and even some of the other sites, like the water parks and Downtown Disney.
I am not sure what to recommend when it comes to official Disney videos, but I do strongly recommend anyone interested to visit both
www.allears.net for photos of just about every corner of the parks, as well as to start viewing some of the wdwradio video podcasts from Lou Mongello to get some great tours through different parts of Walt Disney World.
Now to the Advanced Dining Reservations. That is a problem, as the September Free Dining promotion that they are running has no doubt increased the amount of people dining in Walt Disney World restaurants during the time of your stay. Keep trying, as cancellations from people overbooking should make some last minute opportunities open up. Also try the online system, which can show openings 24 hours a day.
Please feel free to send me any follow-up questions!
Have a magical vacation!