OK, just sent off the I-175F and I have a wait in front of me. I'm in Peru now with my fiance and would like to get as much stuff collected for him while we are still together--things move faster with a gringa pushing the bureacuracy, let's be honest.

So what am I going to need for the interview? Proof of relationship, originals of everything we sent in for the I-175F...

I know each embassy is different, so I am a little confused about what actually we are going to need.