I’m currently on the last night of an eight night award stay and want to extend my stay for three more nights (so 11 total), which it seems should trigger a second Fifth Night Free. However, two reps with Bonvoy Reservations have said they don’t have the ability to change a stay in progress and would have to charge me the full rate for all three nights, but that the hotel might be able to do it by calling Partner Support; one front desk person told me to call Bonvoy, and another told me he doesn’t know how to do anything with award stays and I should talk to his manager in the morning. Is what I’m asking for possible, or am I just wasting a bunch of people’s time (including my own)?