IME in Macau anything is possible if you go during a period of low demand. I hold a MOP988 reservation at Grand Hyatt a week after your dates, which also felt unusually low. I wouldn’t worry about it.
I know the Venetian in Vegas is no longer IHG affiliated. What’s happening in Macau? I think at a minimum, the Londoner needs to be removed from the thread title — it’s turning into a Luxury Collection (Bonvoy)?