There was a bit of a brouhaha when he awoke around 12:30 (about normal; he's been waking up once or twice a night for a snack) and realized that he was in a different, very dark, and parent-free room. That induced some wailing and it took quite a while to settle him back down. Kit and I took it in shifts.
But he got back to sleep around 2 am and then slept straight through until morning (around 6am). So that was pretty good. And we didn't cave in (after an hour and a half of shrieking while sleep deprived, I might add) and let him sleep in our bed. We stuck to it.
And now he's just going to sleep tonight. Tonight, he decided he wasn't going to go quietly. This new on-your-own-in-a-crib thing just isn't what it's cracked up to be. So there was a lot of wailing and refusing to lie down when I put him to bed. (See "extinction burst")
So tonight's story time consisted of paragraphs of "Watership Down" interspersed with me reaching into the crib and getting him to lie down again. Eventually I gave up on that and just sat with him, either shushing, talking softly about whatever, or reciting bits of Dr. Seuss that I can recall. (The other thing I'll read some nights is Seuss' "Sleep Book", one that I remember hearing when I was young. I've always loved Dr. Seuss.) This meant I could turn the light out, which I think helped.
All in all... not horrible. It took about an hour and a quarter tonight. Which, in a small echoey room with a POed infant and a nagging headache, is certainly not fun. (See post icon.) But also not as bad as it could've been. And I expect that, after a week of this, it'll be the new routine.
[trying to do this from memory, in the dark. My favorite page from the "Sleep Book":]
A Jedd is in bed.
And the bed of a Jedd
Is the softest of beds
In the world, it is said.
He makes it from pom poms
He grows on his head.
Now he's going to sleep,
On the softest of fluff,
From growing the stuff.