The first day has come to a close. I managed to busy myself and was waiting in the carpool line promptly at 3:30 p.m. And the verdict is ... M - had a great day! Hooray!
Now, as is par for the course with her, I didn't get a huge amount of information. They played on the playground, did a little work, had story time in the media center, had a nap. But she was excited, not as tired as I'd expected, and for me, that's good enough for now.