See the post here: http://hackmytrip.com/2012/10/hyatt-48-hour-sale-through-october-17/ But here are the details you really need: Use offer code C48OCT when booking through Hyatt.com. Hyatt Regency Orange County Hyatt Regency Aruba Hyatt Place Riverside Hyatt house Salt Lake City / Sandy Hyatt Place Atlanta Downtown Hyatt house Denver Airport Hyatt Place Denver Airport Hyatt Place Denver South Hyatt Place Lexington Andaz San Diego Park Hyatt Chicago Hyatt House Denver Tech Hyatt Regency Louisville Hyatt Place Austin Arboretum Hyatt Place Bush Intercontinental Airport Hyatt Place San Antonio Airport Quarry Market Hyatt Regency Hill Country Resort and Spa Hyatt Market Street Hyatt Santa Barbara Hyatt Escala Lodge Hyatt Place Inverness Hyatt Place Santa Fe Hyatt Place San Antonio Riverwalk Hyatt Place Fremont Hyatt Place New Orleans Convention Center Hyatt Place Overland Park Convention Center Hyatt Regency Dallas Hyatt Regency La Jolla Hyatt Regency Monterey Hyatt French Quarter Hyatt Fisherman’s Wharf Hyatt Place Atlanta Airport South Hyatt Place Lake Mary Hyatt Place Orlando Convention Center Hyatt Place Orlando Universal Hyatt Place Tampa/Busch Gardens Hyatt Regency Phoenix Hyatt Regency Montreal Hyatt Regency Indian Wells Hyatt Regency Century Plaza Hyatt Place Milwaukee Airport Hyatt Place Milwaukee West Hyatt Regency Wichita, KS Hyatt Regency McCormick Place Full Terms & Conditions: Offer valid for bookings only between 12:01 a.m. on Tuesday October 16th and 11:59 p.m. on Wednesday October 17th Central Daylight Time, for travel between Wednesday October 31, 2012 and Sunday January 27, 2013 at participating Hyatt Hotels & Resorts, Park Hyatt and Andaz properties in the U.S., Canada, and the Caribbean. Reservations are subject to availability and must be made in advance. Full non-refundable prepayment required at time of booking. Offer is for a limited time only. Simply request offer code C48OCT when you book your reservation and pay the 48 Hour Sale rate. Discount is off the Hyatt Daily Rate for the room type requested at time of booking. Rate is per room, per night, excluding service charges, taxes and other incidental expenses. Rate is based on double occupancy. Additional guests may be subject to additional hotel charges. Additional charges apply to room-type upgrades. A limited number of rooms are allocated to this promotion. Full, non-refundable, Prepayment due at time of reservation. No changes, amendments or cancellations allowed. Changing to a different property is considered a cancel and re-book, and is non-refundable. Canceled reservations and no shows will forfeit the full prepayment. Promotional blackout periods may apply due to seasonal periods or special events, and normal arrival/departure restrictions apply, including, but not limited to, minimum length of stay and day of week restrictions. Offer may not be combined with other offers or discounts. Hyatt reserves the right to alter or withdraw this program at any time without notice. Hyatt Hotels & Resorts® encompasses hotels managed, franchised or leased by subsidiaries and affiliates of Hyatt Hotels Corporation. The trademarks Hyatt®, Hyatt Hotels & Resorts®, Park Hyatt®, Andaz®, Grand Hyatt®, Hyatt Regency®, Hyatt Place®, Hyatt House™ and related marks are trademarks of Hyatt Corporation. ©2012 Hyatt Corporation. All rights reserved.