US Immigration from Canada

Hello! We applied for the I-129f in August and are in the throws of waiting. My fianc is from Canada. At the time, we thought the Vancouver consulate was the correct option, but have since realized we should have put Montreal. Is this something we should submit a request to correct now via USCIS or will we be able to correct this at the NVC stage? Thank you in advance!

Can I take my own digital photo for the DS-160 and then bring 2 professional passport pics for interview?

Or do all the pictures have to be the same?

Do I need to get passport photos taken for the DS-160 or can I just take a pic that meets the requirements and upload that?

I know for the medical and final interview I will need actual passport photos.

Hi there, I'm starting to gathering documents for my K1 visa and am trying to figure out how to bind the documents together in the end. Just loose leave with the name, page number, etc, on each pg, and that's it? Can't seem to find the answer in the instruction packet. Thank you very much!

I'm about to start the DS-160 and have a question regarding the address where we will stay. My fiance has not yet found a place and he is currently living with his parents. He will move before I go there, but we don't know where yet.

Should I put his parents address in the meantime?