I stayed at Intercontinental O'Hare last July and did receive the room upgrade and movie as a Gold Ambassador (at the time) but did not receive a welcome amenity. This was one of my first stays as an Ambassador so only checked on departure about the welcome amenity and was told they had moved my room allocation but the amenity was not transferred. I didn't pursue it any further.
Room was massive and bed very very comfortable. So overall a good stay.