For those who are planning on signing up for the Hyatt card to get the 2 free nights, can they be used on existing reservations? If so, this could help prevent rooms being unavailable when the free nights are earned.

Also, would it be best to do the diamond status match before the credit card signup to get suite nights and lose diamond after 60 days,

OR

signup and get 2 regular nights free then status match during our wedding to meet the 12 night requirement and have diamond status during the honeymoon and hope for suite upgrades?