I have to disagree with the OP. I've gotten nothing but great treatment, even at NYC properties. I do think that the treatment at a full service is a little bit better than the treatment at CY's though. The CY's have been hit and miss for me.
This past Monday I was treated like I was the only plat they had seen all day - offered to send up an amenity even though I choose the points because I looked exhasuted (I was). Even last night the gentleman taking room service orders couldn't try to please me enough when he saw that I was plat - offering to send up ice because I already had water from the lounge and a glass just in case I didn't want to drink out of a bottle. It wasn't huge stuff but it was a nice thought. I don't expect upgrades in NYC because the hotel really is sold out every week - but they have always gone out of their way to accommodate my room requests (and even corner rooms ugrade on occassion), even the first week I stayed there.