Well, as a confirmed BWV owner I cannot think of any pros to owning at OKW.
That is one of the first real advantages -- you get to come on these boards, tout your own resort, disparage others, and have a good time debating who's best.
Otherwise:
1. Regardless of where you own or how you buy (resale or through Disney), you have the same benefits as all other
DVC members and will be treated by Member Services (or some like to say mistreated) the same. Member Services is your life line to reservations and all things about DVC. They are actually very good at what they do, although they might fall down a little sometimes, and you can use them (and thus their 800 toll free number) not just for your room ressies but also for restaurant PS's, shows, etc. You can even use them to set up air travel and car rental although I recommend doing that on your own to search for best deals.
2. Your main advantage is that you no longer write that fat check for room rates when making a reservation. That is also a disadvantage for those of us who have real problems staying within budget as not paying for the room becomes an excuse to spend a lot more money on other things at WDW -- that one more expensive meal at an Epcot restaurant seems never out of reach when you paid nothing for the room. Net result if you are not careful is that you can end up spending more than you ever did before when you did write that fat check.
3. You get excellent accomadations at any DVC resort and if you ever get beyond the studio stage to a 1BR or larger, look out. Once you stay in one of those larger rooms you will face the issue of hating the thought of ever going back to a studio.
4. Having a kitchen (1BR and larger) and even the half kitchen in the studio is a huge advantage. We don't cook when there so that is not the point (although some do). It is being able to buy quick stuff and keep it cold -- milk, cereals, sandwich junk, beer, more beer--and being able to heat stuff for that midnight snack (the microwave rules) that makes all the difference in the world from a regular hotel room. Also, having a w/d in the 1BR's and larger is nirvana.
5. You are of course now committed to going at least yearly or ever other year -- your punishment for joining and the reason you are likely to catch a strange disease that sets in very quickly: the insatiable desire for more points. Give in totally to that desire and you will find yourself completely broke, but as happy as can be.
6. There are not really many disadvantages. I consider the limited maid service to be one -- I like having it daily on vacation. The majority you will find can care less and even prefer not having it; they don't want CM's coming daily and messing up their routine. Moreover, it is obviously a cost that should be born by those who really want it rather than as annual dues to everyone and thus you can buy it when there for a fee. Another disadvantage is that a number of the trade outs you can do, such as to Disney's regular resorts or the cruise, cost far more points than they are worth, although many of us who only want to go to a DVC resort are unaffected.
7. You of course have duties as an owner, including paying annual dues which are quite high in comparison to other timeshares -- but then you are getting the best and being able to stay right on site. But be mindful that DVC is not cheap although in the long run you will spend a lot less than if you rented a room annually at a Disney deluxe resort (which all DVC resorts are). Another duty is to treat the room as your home. If you arrive and find something amiss -- light bulb out, washer not working -- report it to housekeeping. Too often people fail to report a problem and stew about it instead. But housekeeping supervisors are not seers and the room CM's don't often report anything they find and thus the only way housekeeping will even know there is a problem in the room is for some owner to mention it.