I wanted to let people know, that I am still working on this and hope to have more details by the end of the month. In all likelihood, the DO will be held Friday-Sunday, one weekend in October.
Rates are not going to be low at the hotel, but I think it is best to look at it as a package you are getting, as most food and activities will be sponsored. Hyatt Gold Passport will also be running a promotion or two. Not knowing how many people will sign up, if demand outstrips availability, priority will be given to people staying at Hyatt and on a first come first serve basis.
Hopefully I will be in a position to give more details soon.