If you didn't read these boards or do much research, you'd never know that a DVC property isn't exactly the same thing as any other WDW resort!
If you book through CRO, you handle it just as you would any other resort stay. There are currently AP rates available, but I don't know how common that is. When I checked AP rates for our upcoming trip, there were AP rates available at all the DVC properties. The discount for OKW was only about 20%, so they're not as good as some other resorts.
I've been told that they hold out the DVC rooms for 2 months also. However, we booked our room in January for a June trip, so I'm not sure I understand how they do it at all! I've also been told they actually don't sell out the entire property to DVC, but reserve 10% for general reservations. I don't know how they do it, but we reserved our room much earlier than 2 months out.
We also felt much more comfortable reserving through CRO. We are actually paying a little less than it would have cost to rent due to having a comeback rate, but we didn't have that discount when we made the reservations. We would have rented through CRO with or without the discount.
We wanted the more liberal cancellation/changes policy along with not having to pay in full so far in advance. We also wanted daily housekeeping and I believe that's an extra $25 a day when you rent.