Originally Posted by
Droff
I'm in a similar situation. Have two FNCs that I'd rather use instead of the points I used to book a two-night stay. I have not been able to get a representative that is able to make the booking due to availability, but I recently read some datapoints of a DD supervisor being able to make the conversion even when there is no standard room award availability. I'll probably try that next, but am waiting until it's a little closer to my trip date just in case some availability opens up from cancellations.
I don't know why Hilton makes this more complicated than it needs to be. There really should be a simple process to add a FNC to a current reservation and then simply adjust your balance by the points.
Their own T&Cs state that a FNC can be added to an existing Reward stay:
I take that to mean you can add an additional night to an existing reservation and not replace your already booked reservation with a FNC. This privilege has always been up to the whim of the hotel.