We never have a problem with changing dates. I make the reservation and then we start to invite people. We rotate it around. I have four brothers and sisters, my wife has five. We even have friends too!!!!
There is always someone that can squeeze it into their schedule.
Two of my sisters and my father have bought their own points. Between us, we have nearly 1000 points now....all OKW. They agreed with me on the value of owning and staying at OKW.
It used to be that you would get quizzical looks from people when you said that you owned a timeshare, even if it was at Disney. Nowadays, most people I mention it to have already heard of it or are already owners.
Now that I have figured out that they can take the mantainence fees out monthly without interest, and I have the payment on the auto-enter thing in Microsoft Money where I keep my checkbook, I don't even notice the maintainence and it really does feel like its free.