We booked a 5 night stay in Feb for Jan 2018 and received the email for $75 gift card for each night of our stay. Last week we decided to increase our stay to 7 nights and added one night onto each end of our existing reservation. The CM on the phone wasn't sure if we would get a GC for 5 nights or 7. Any guesses or similar experiences?
Yes, we had something similar. We booked late last year, originally splitting our trip between Fort Wilderness (4 nights) and Caribbean Beach (5 nights). After the gift card announcement we started playing with the lengths at each resort and ended up staying the full nine nights at CBR and we received a $675 gift card at check in.
Let me also add (to go along with the other thread that is going on), we were on a package too and we didn't have any issues with making any/all the changes we did. The difference, I believe, is that we were never offered $75 off the room rate... we had the gift card offer and I always made sure that the changes were not going to affect that. Another difference is that we did not have any changes to our tickets since we had leftovers from when Hurricane Matthew ran us out of town. We bought the minimum two days with our package and never changed those.