My friends bought at NCV and were told they get "12 Bonus Weeks" with II each year. Turn out it was 12 getaways, at the discounted rate, same for all II member. I told my friends I had never heard there was a limit of 12, I'm sure II would sell more getaway weeks given the opportunity especially since you can purchase a guest cert. for friends or family.
Marriott NCV rep made it a big selling point to my friends. I told her I could have booked them on Getaways...oh well, they bought developer anyways.