There is this post on a targeted promotion that was done to help get new folks to join gold passport.
Since hyatt hasn't had many targeted ones in the recent past (long ago wine, cigar) I'm not sure if there is any chance of getting on this one but it can't hurt to try especially if you can show you stay at other hotels a lot.
Its about the best thing going. One free night for every other stay.
http://www.flyertalk.com/forum/showt...2&page=1&pp=15