As per previous boost, yeah, I went to bed around 2 am, figuring Umbra had proven himself more than capable of being a good guest.
And then the pitiful mewling began. And then the sounds of things being knocked around in the front room.
We caved and let him sleep with us in the bedroom. He was an absolute sweetie. And I even woke up with clear sinuses. It's a Catsmas miracle.