Finally, the interview

I just got the mail and there's a letter for a green card interview (which will be videotaped, apparently)... it is for October 13th (the morning after I get back from MA, thankfully!). Apparently, I shouldn't have surrendered my original I-94 to the OK city office when they gave me my EAD (!) - I'm supposed to bring it to the interview. And, argh, they want letters of employment showing rate of pay and hours worked... not a problem for me, but they're not supposed to count me/my income, just Brendan's... I better bring proof of all our assets and apparently, "evidence of a common residence and shared life (including photos)".