Yeah, I asked my dad and he said he filled out my FCF.
And the bit that you have to certify, I'd say that it's how much money you're supposed to pay to go to MIT. So total minus financial aid, I guess. Also, living expenses.
When we sent my FCF my dad had the bank issue a statement saying that he was capable of paying the fees for the school year.
And the I-20 comes TWO WEEKS after the FCF is sent. Two. Weeks. Visas do indeed suck, and visa officials are generally condescending, rude people. Well, ours seems to be.