They weren't at the Genius Bar, they were all over the place and milling around, as they usually do when the place is packed.
I think (but I lay no great weight on this), that they didn't really have much in stock in the days before Christmas that wasn't scheduled for pickup (excepting iPods and such), and that there was no reason to go there while wrapping up Ch. shopping unless you had already reserved.
But, as I say, that's just a guess. The only AAPL product I bought personally this Christmas was stock--lots of it. And I felt just fine about that today, although I generally do feel buyer's remorse.