After being without electricity for the last ~48 hrs, our power came back on a little before noon today out here at lake Nac. God bless Deep East Texas Electric Coop. They were out here working in our area early this morning and made it on to our road around 11 or so. I saw them go up and down the road checking the lines and then we came back up pretty soon after that. I was unaware, but they posted an update earlier and said that only 1% of their service area was on the ERCOT system. Our service was fine with rolling blackouts until the freezing rain started coming down Wednesday morning. After that it flickered a bunch like it does in high wind or snow and then went out for good.
I shut off our water at the house and at the street on Wednesday night before going to bed. I let things warm up for a bit after the power came back on today, opened up pretty much every fixture in the house, and started to pressure back up at the street. We have wheel valves in the box for our side so I could open them gradually and see a hose bib flowing. We walked all over the house listening for leaks and shut off fixtures after confirming both hot and cold worked. No problems that we could see and a quick walk through the attic didn't turn up any issues.
I'm feeling pretty lucky but will still be on alert for a few days to make sure no slow-burn plumbing gremlins decide to show up.
Thanks to everyone for sharing ideas and status updates on these threads. It really made it much easier thinking through all of this BS together. I was team drip inside/wrap outside until we lost power and then was team shut off at the street and hunker down.