I asked Hilton awhile ago and was advised "no" they didn't, and couldn't because the properties varied so differently in type. I wasn't asking for certificates that covered packages . . .all I wanted was certificates for specific dollar amounts that one could use @ any Hilton throughout the country. I don't see why $50 USD @ Hilton IND isn't the same as $50 USD @ Waldorf-A. Marriott sells $ amt certificates and package certificates . . . . .