We just got the appointment notice for the biometrics and at the bottom it has a section for "request for rescheduling". Is it ok to reschedule? Do they frown upon that? Will it affect our petition at all? Do you have to meet some kind of requirement in order to be able to reschedule?
We are going to be out of town the week that the biometrics is scheduled and that is the reason for wanting to reschedule.

I couldn't make it to my Biometrics appointment on the date they specified, but at the bottom of the Appointment Notice it said that if I was unable to appear at the time specified, that I could go on any following Wednesday at the same time noted, as long as I appeared before a certain date.

I went the following Wednesday and there were no problems whatsoever.