One more datapoint for Venetian stays NOT earning WOH points or TQN or Brand Explorer tab if not booked through Hyatt. Quotes from recent emails between me and my assigned MHC:

(Me to MHC) “Recent 4 night stay at Venetian Las Vegas (as per attached folio copy). Most of the stay was “comped” by the hotel but I did pay a small balance. I understand that there are a lot of rules for Venetian participation in World of Hyatt program, I understand that receiving WOH points for spend at Venetian is unlikely, I'm hoping that you can arrange for Qualifying Nights credit for the 4 nights and also Venetian Resort completion toward Brand Explorer award.”

(MHC to me) “I do not see that the stay at the Venetian was booked through Hyatt. If I am mistaken, please send me your confirmation number and I will see what I can do. If it was not booked through Hyatt, I am not able to offer any night or point credit for your visit there.”