OK,
funny story here....
was in NY and had a reservation at the westin, which at the time, shared the building with St. Regis.
This is one of the few times I actually had a printout of my reservation. My spg might have been gold, might not. I got to the counter and they had no reservation. I whipped out the copy. They were sold out and put us in a St. Regis suite with butler. It was rather funny considering we were there ONE night and packed in gym bags only.