I have been taking some photos in the past a few weeks, when the street is quite empty. At a few places I was told that I can not set up tripod on the property, like in front of Vessel in Hudson yards, which I understand. I tried to set up tripod this morning on the sidewalk of 5th Ave between 49th and 50th. I was told by a security guard of Rockefeller center that the sidewalk is part of Rock center's property, no tripods are allowed. Is that true?