We are getting close now! The LTE modem is installed and operational. Limited live-streaming from the cameras is available, but we do not have the bandwidth to allow multiple users. I'm working on implementing a web page that will provide images like the ones below, on a regularly updated basis (probably every 60 seconds or so).
You can see that someone is there, but it's hard to make out details on the wide view:
Oh, look, it's Pete getting something out of his car (same source image as above, just zoomed in this time):
And from the electric eye keeping watch in the picnic shelter: