For those making a wedding at a Hyatt, this is a nice bonus, http://hyattweddings.com
T&Cs don't seem to state if this stacks ontop of current offers. Besides, T&Cs state:
Offer Code HMOON must be requested at time of wedding inquiry. Offer is subject to availability of function space at time of booking. Qualifying planners who are Hyatt Gold Passport members may also be eligible for Hyatt Planner Rewards program bonus points. Hyatt Gold Passport free night redemption is available via goldpassport.com or by calling 1-800-30-HYATT or your nearest Worldwide Reservation Centre. Free night award reservations are valid for standard rooms only and are based on double occupancy. Additional guests may be subject to additional charges. Free night award does not include incidental charges. Hyatt reserves the right to alter or withdraw this promotion at any time without notice. This promotion is subject to the complete Hyatt Gold Passport program terms and conditions. Hyatt Hotels & Resorts™ encompasses hotels managed, franchised or leased by subsidiaries and affiliates of Hyatt Corporation. The trademarks Hyatt™, Park Hyatt™, Andaz™, Grand Hyatt™, Hyatt Regency™, Hyatt Place™, Hyatt House™, and Hyatt Residence Club™ Resorts, Hyatt Gold Passport™, and related marks are trademarks of Hyatt Corporation and its affiliates. ©2012 Hyatt Corporation. All rights reserved.
Which means they can just quote you higher rates to cover the cost of these points...