Originally Posted by
PHLphan

See my post below the post you quoted.
Originally Posted by
PHLphan
Per T&C:
"Marriott Rewards® members who register for this promotion by March 31, 2012, will earn 35,000 bonus points after 20 paid nights plus an additional 15,000 bonus points after 25 paid nights – up to a maximum of 50,000 bonus points between February 1, 2012, and April 30, 2012, at participating Marriott properties." (my bold)
Ah yes. There are many different versions of the MegaBonus promo and in re reading the OP's original post he is asking about 'nights' not stays. So the OP is apparently on a nights version of the promo not a stay version.
Not matter how many consecutive nights at same hotel, it still equals 1 stay. However, it makes no difference to the OP how many stays if he is on one of the nights versions of this promo.