I still can't get an answer from the hotel regarding what time they open to guests tomorrow or what are the hours for food in the lounge. Their phone just goes into voicemail after listening to recorded messages.

However, according to the Hyatt website, they're still selling rooms for tomorrow (and not earlier), including club level, so I guess tomorrow is the official opening day.

ADDED:It's interesting that my confirmation says that checkout time is noon (but as usual I get 4 pm as a Diamond) while the hotel's website says 11 am. This could lead to some interesting discussions between guests and the front desk.

ADDED AGAIN: I just received some information that their club lounge won't be open until sometime next week. This is despite the fact that the Hyatt website is still selling club rooms for $20 more than the same size and type of room without the club designation, both for tomorrow night and for a random date several weeks in the future (which implies that $20 is their standard upcharge for club level rooms, at least for the first few months).

Diamonds will apparently get breakfast in the Urbana Craft Kitchen and Market, where it looks to me like Urbana whatever is the name of their restaurant (local cuisine) which the Market is a grab and go place.