Requests can be made and added by calling the resort with the member number. You can call when MS is closed and do all kinds of things with the front desk and a reservation number.
Please don't take anti-renting comments the wrong way. Renting is a great thing. Its great for the owner to be able to recoup costs when he can't use the points. Its great for the guest also, he gets a great room at a great price and gets to see
DVC up close. We get lots of new members this way, new members keeps the price up.
Renting is a win-win deal.
What you will see complaints about is people that rent points as a business. People who reserve choice times for sale on Ebay. people who rent only Sun-Thurs. These things are arguably permitted under our contracts, but are also examples of pedestrian behaviour. Really not someone I want to be sharing my 'Home' with.
You are more than welcome.
While you are test driving, go over to OKW, go early, tell them that you are thinking of buying and you heard that OKW had the best accomodations of all DVC resorts and you would really love to see a room, any room. Its very likely that they will let you.
After that, you will probably want OKW as your home resort, its very available through resale.