As far as the original questain of non-members checking the website. I pretty much agree with not allowing this but see where I would have liked to check availability before purchasing.
Maybe it would help sells to give potential buyers a password that would work for a few days. If it keeps me from checking for rooms though, keep away you non-members, lol.
I don't think it would help much. If you were to pay attention to trends over several years, you'd see patterns, but it would take a lot of watching. And members here know that those patterns can change quickly. At the height of the recession, people were getting a lot more Wow, I can't believe that was available reservations. A big resort like ssr opening up increases demand for smaller resorts at seven months. There was this one weird period where the normally harder to book resorts where available, but it was hard to get an ssr reservation. When we joined, it was easy to get a room in early October, which was when we traveled, Disney moved food and wine back. More value rooms have taken some of the pressure off the bwv standard view rooms, although they can still be tough to get, it isnt the "you'd be lucky at any time of year if you couldn't book before the booking window" that it was for years. What is available now is no indication with DVC of what might be available tomorrow, much less five years from now.