FYI for those in NYC. Been checking the nyc vax site a few times a day. This morning around 8am the system had 1 appointment at 1030a, so I snagged it. Ubered to Staten Island. Went right in, no line, hardly anybody in waiting room, got the shot and was out. Easy. Some amount of luck, yes, but just so you NYers know. People do cancel and slots open up.