It's all over. I'm home, having showered and had dinner.
It was hectic. I walked about four miles -- all in the same building -- talked with dozens of people, solved problems for most of them (except for that pesky issue where things worked in reverse -- people who have that problem will have the Internet for a little while and then have to register later).
The final call was the roughest. Something had gone wrong with a computer display upon logging on. It probably had nothing to do with registering, but it's hard to explain that. Eventually we found the setting that controlled it, so all was well.
But, ultimately, nearly everone had Internet by the end of the day. That's good.