The kids made it to Anchorage. I asked about the Seattle and as suspected, the youngest (15) did a great job of steering his siblings to the right terminal. This is the kid who wants to be a general someday. His brother is 18, but high functioning autism, and easily stressed. His sister is 16 with ADHD. When asked if she would have navigated Seattle well alone, she admitted that her brother is annoying, but useful.
About what I expected. They were eating lunch when I called.
Now I just have to deal with being kidless for six weeks. While disconcerting, I'll admit I smiled when I put away their water glasses, knowing that things will stay where I put them for the next month and a half. There's definitely an upside.