I've been following this thread closely since I have a booking starting July 3. No one from the hotel contacted me until today, when I got an email asking for preferences and sending a payment link, as many non-US Hyatt properties do. I asked whether the hotel would be ready, since all official announcements have an opening date of August 1, and they said, "We are opening 1st of July 2025, the system has been set to 01 August 2025 as a precaution." So we'll see how it goes!