FYI, I just had a very bad experience due to government crackdown.
I picked up a girl in Manhattan, and when I arrived to my 5 star hotel (in which I have been staying many years, and been bringing girls all the time, including yesterday), there were guards at entrance asking for her passport and making her register. This has never happened to me before, and I was extremely pissed (especially since I occasionally also book a 2-person room, and my "girlfriends" could also easily be mistaken for WGs), but they wouldn't cave in, and made the girl register, and copied her passport. When I asked them, they said this was due to government rules - but then again, I had no problems yesterday, so I'm guessing government is making occasional visits/raids to hotels and spas.
So it seems that although the expo is over, the crackdown isn't...