Originally Posted by
jibi
You can use them to book a future reservation beyond the Feb 28 booking expiration date. I'm using one for a reservation in May and another for a reservation in August.
Are you sure you're not confusing the two free nights from the credit card with suite upgrades? The Diamond Suite Upgrades can be booked for past it's expiration date(lose if reservation cancelled / changed) though. The free nights generally must be used by the expiration date with a possible extension of a month as noted.