Skimmed the thread, sure I missed this question, but I will pose again anyway.
We have a 2 night stay in NYC coming up at a very good rate over a holiday weekend. Adding a third night as our work schedules have changed, at a much higher, but acceptable rate. If we chose to add SNA's to these reservations, is it possible they will grant them for just the 1 night or the 2 night stay but not the other stay and we'd have to change rooms? Or will the fact that we are making the 2 requests at the same time make this obvious somehow to the powers that be to either grant all or none?