I don't feel like DVC members get special treatment as opposed to cash guests...but what is special about it to us is having all the space to spread out, which is why we bought a DVC membership in the first place. It affords us to stay in a 1-bedroom villa because we couldn't afford to do that on cash each time and keep going to WDW. I'm sure regular deluxe hotel guests get treated more "special" but it doesn't bother us. We're simple and easy to please.
On our last trip, the villa was guaranteed to be ready at 4pm (BWV's policy, and I think the other DVC properties as well), but it wasn't ready for about an hour more. The CM at the front desk immediately told me that she was giving us a $50 credit on our KTTW cards. I don't think this was any more than they would have done if we were staying on cash, but I thought it was great that they did that.