They spent the first day being a little cautious of the humans of the house and since they'd just been admited to the animal shelter the day before it was a huge change for them in such a short time. They did really well, however, and seemed to adjust pretty well for all that they had gone through. They understood well the use of a litter box, enjoyed playing with braided yarn, and ate and drank without problem.
As for the other cats in the house, they were yet to be allowed to meet them, as the kitten were under "surveillance" to make sure that they were healthy. New cats should also always be given the oppertunity to get adjusted before taking such a huge step as that.
A few photos from their first day:
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