I found this link to a post regarding a previous 48 hour sale in June. Says "save up to 30%" -- not sure off what rate?
Very limited list of participating properties (US only):
Hyatt Regency Pittsburgh International Airport
HYATT house Charlotte Center City
Hyatt House Charlotte
Hyatt House Bridgewater
Hyatt House Pleasant Hill
Hyatt House Pleasanton
Hyatt House Scottsdale/Oldtown
Hyatt House Gaithersburg
Hyatt Place Atlanta Airport North
Hyatt Regency Cincinnati
Hyatt Regency Newport Beach
Hyatt Place Grand Prairie
Hyatt Regency New Orleans
Hyatt Place Ft. Lauderdale/Plantation
Hyatt Place Tucson Airport
Hyatt Regency Toronto
Hyatt Regency Philadelphia at Penn’s Landing
Hyatt at the Bellevue
Hyatt House Sterling/Dulles Airport North
Hyatt Regency La Jolla
Hyatt Regency Pier 66
Hyatt Regency Long Island
The L.A. Hotel Downtown
The Driskill
Hyatt Place Detroit/Livonia
Hyatt Place Auburn Hills
Hyatt Place El Paso Airport
Hyatt Place Atlanta Airport South
Hyatt Place Louisville
Hyatt Regency Princeton
Hyatt Regency Denver at Colorado Convention Center
Hyatt Regency Cleveland
Hyatt Regency Sarasota
Hyatt Place West Palm
HYATT REGENCY MIAMI
Hyatt French Quarter
Hh Morristown
Hyatt Regency Lost Pines Resort and Spa
Hyatt Regency Coconut Point Resort & Spa
Grand Hyatt Atlanta in Buckhead
Sacramento
Hyatt Place San Antonio Airport/ Quarry Market
Hyatt Place Albuquerque Airport
Hyatt Place Charlotte City Park
Park Hyatt Chicago
Hyatt Regency McCormick Place
Hyatt Key West Resort and Spa
Hyatt Regency Austin
Hyatt Deerfield
Hyatt Rosemont at O’Hare
Hyatt Lisle near Naperville
Hyatt Regency North Dallas/Richardson
Hyatt Place Charlotte City Park
Hyatt Place Phoenix North
Hyatt Place Austin North Central
Hyatt Place Dublin/Pleasanton
Hyatt Place New Orleans Convention Center
Hyatt Place Portland Airport
Hyatt Place Tempe/Phoenix Airport
Hyatt Place Phoenix/Gilbert
Hyatt Place Scottsdale
Hyatt Place Fremont
Hyatt Place Lexington
Hyatt Place Riverside
Hyatt House Boston Waltham
Hyatt Place Greenville Haywood
Hyatt Place Roanoke Valley View Mall
Hyatt Place Topeka
Hyatt Place Dallas Park Central
Hyatt Place Fair Lawn Paramus
Hyatt Place Minneapolis Eden Prairie
Hyatt House Atlanta Cobb Galleria
Hyatt Place Charlotte Arrowood
Hyatt Place Fort Worth Cityview
Hyatt Place Fort Worth Hurst
http://first2board.com/willrunformil...-48-hour-sale/