We are staying a total of 14 nights. The best way to do it for us was to book 2 reservations, 7 nights in each. We were able to get 14 days of tickets this way and 2 $200 gift cards.
We were told by a CM that as long as the package is more than 5 nights, you can get this offer...so if you are staying 10 nights, you could book 2 reservations of 5 nights each and get the 2 gift cards.
We are paying a little more than we initially were. But with the $400 in gift cards and the extra park tickets (we did have 10 day PH with our package)...it ended up being a much better deal!!
Good Luck...