Originally Posted by
craigthemif
Essentially the fifth night free works out as a 20% discount across the five nights, especially now that award pricing is more dynamic. So you are merely replacing one of those five nights with a FNC. (what you aren't doing is replacing one of the four full-price nights and still getting a free night)
In other words...5th night free is not actually 5th night free, its 4 nights smoothed over 5 nights. You are then using the certificate to offset one of those 5 nights?