Now that it's getting close to Halloween, we're running a contest to hear your scariest stories! These can be scary stories that you've experienced or stories that you've heard and the story with the most reactions will win!
As far as I can tell, the answer to that is no as long as you have a legitimate reason. Today i moved my Northwestern interview because it was during finals week, and they didn't have a problem with it.
Hmm, what about schools that have rolling admissions? I asked this when rescheduling with Northwestern (which apparently does admit on a rolling basis) and was told that yes, it's "a little better" to interview earlier. I wasn't sure what to make of that, but I had to reschedule anyway so..