enrollment will open next week, here is detail, you are earning 1 free weekend night on every two paid stays, and weekend night can be redeem on CAT 6 properties.
Earning period, May 1st- July 31st
Burning period, May 8, 2009, and September 27, 2009.
weekend night is defined as Fri, Sat or Sun night.
I am expecting Hyatt Q2 promotion is fast free night