I agree with wdw1972 on just about everything. We did the roundtrip out of Vancouver and loved it! We had previously done the one way out of Seward and the Vancouver trip was better.
We used points and will do it again...the real cost of points is about $6 a point a year (intial purchase divided by 40+ plus that years dues). This is the actual value of your points. Most will point to the $10+ for rental, but the $4 difference is paying you for the headache, hassle and risk of renting, not the actual points. Using the actual value, you would have to hunt for a good deal to beat the price, you could do it, but once again - headache, hassle, etc to save a couple hundred dollars.
The thread posted by minybear above is an excellent thread, my wife (WDWGuru) posted a ton about our various experiences.