I came home today to an exciting burst of color in my terrarium. My worries that I would miss the blooming of my orchids turned out to be unfounded, and I look forward to updating on the blooms over the next few days.
In general, my orchids fared quite well over the 2.5 weeks without watering. As I expected, the mounted ones and the smaller seedlings were the most sensitive. They show signs of dehydration, and many have lost a leaf. However, I expect all to recover quickly. In contrast the potted herbs in my kitchen are all just dead dried husks.
For the rest of my orchids, the wet terrarium seems to have worked wonderfully. None of the larger orchids looked particularly parched. A few pseudobulbs added some wrinkles, but that was about it.