Just when I thought I didn't have any more questions (yeah, right!):

The packet 4 instructions and interview letter tell O to "be prepared to pay the equivalent of $100 in the local currency for the visa fee." That's clear enough. But then again the NIV applicants first go and pay their $100 fee at a bank in town and get a receipt that they bring to their interviews.

So, people from Ghana: pay in advance or bring the big stack of cedis to the interview?

Thanks!

Bring to the interview.

I'm not dealing with Ghana so I'm not really qualified. But most everything I have read regarding payment of the K1 visa interview fee (at various consulates) says to pay in advance at the bank the consulate has made arrangements with and bring the receipt as proof of payment to the interview.