I am INFP. We are only about 4% of the population.
The only way I can picture myself going into a crowded anything is if I have my camera. Without it I would see no point. I get photography/media passes for concerts or other public events. Walk in say Media as I walk past security. Give my name at the media desk to get my pass. Then for the remainder of the event I say nothing to anybody. Even to the cute guy that was peaking over my shoulder watching the LCD screen on the back of my camera.
I say the bare minimum when I am out. I am constantly in observation mode.