Not necessarily because I think I will book all 20 nights but because I could combine the points with those I already have for more valuable awards. (travelcodex.com)
Once points are earned, members have a variety of options to redeem them for free hotel nights, transfer to frequent flyer miles, or other valuable awards. (wisebread.com)
It makes it easier to earn a large number of points in one account and distribute them as you see fit for the most valuable awards. (travelcodex.com)