Interview scheduled...now what!?

[Krystina and Andy 0]

I am so very confused. We got our interview date in the mail today, and I have everything that they have listed on the forms, but I am so worried because as I read posts on here, I'm not sure what we are meant to bring?!

Do we need to bring the original packet that we sent off (the application), and include the original of the NOA1 and NOA2? ( I don't have them because even though they know I live here in London, they still sent them to my mom in Texas) It doesn't say anything about this on the forms they sent us, but I suppose we could get it together. Also, I read somewhere I needed to fill out another letter of intent, and he needs to take more evidence that we are a couple with him? I know it's best to be prepared, but it doesn't say this on the "What to bring to the interview" section of the forms, so I was wondering if maybe it was embassy-specific.

Also, I'm still a little concerned about my affidavit of support. As I said before, I'm a student in London and have been since I was 17, so I have nothing to show them, and I didn't file a tax return because I don't earn any money here (called the IRS just to make sure that was ok). My parents are his sponsors and they have done the forms and got letters from their employers etc. Will this be ok? Or do I need to fill out the form and get it notarized to show that I earn nothing?

Feel like I'm at the last hurdle but am struggling to hop over it...any help is much appreciated. I've been searching through the forums, but am just getting confused.