So after my 2nd stay (4 nights @ IC Bucharest) I see, as everyone else, partial progress towards the 15000 bonus (30% in my case).
Still think per my last post, and as others have presumed, that partial completion of the task at end of Q3 should yield partial amount of points obtained.
Getting to 100% of bonus points MAY perhaps make a difference for those who have "complete N tasks, get further bonus" (I don't) at the end of promotion, in the sense that those may be required to get to 15000 in order to fulfill the "completion" of the task.
Anyway if nobody gets there first I'm likely to get a posted 15000 by Oct 21, where I expect the 100% to pop up.