Well...for my 50 nights award I choose "5 elite night credits." 72 hours (or more) were needed to post this transaction to my account. As travels in the remainder of the year will be mostly to Asia, where a suite upgrade is assured.
My life-time nights increased, and the nights required for "Ambassador" decreased (both by 5 nights). BUT the total of nights this year did not increase.
Wonders of wonders.