You can't book ANYTHING online past January 8th, 2009 currently. Your check-in date must be in 2008 in order to do even that.
You can book room only thru the phone for the rest of January of 2009 ... you'll be quoted a MUCH higher rate because they default to the highest rate for the period until the hotel and package rates for 2009 are set in August of 2008. You can't book anything for 2009 online until August.
If you are booking a package, you can't book packages til August. You can book room only now. And then cancel that in August and switch it to a package. But .. you're no further ahead doing that.
Basically.. I don't see much point in booking this far out PERSONALLY.. you may as well wait till the rates for 2009 are released. January is NOT a peak travel period for the most part and August of 2008 should be plenty of time to book and get whatever you desire.
That said - you can still call and book a room-only as I noted above. The rates you are quoted will be HIGH.
I'm moving this post to the resorts and booking board where it is a much better fit than theme parks.
I think I got this information correct.. but if I didn't one of the experts here will note where I goofed!
Thanks!
Knox