check. You will receive a letter to inform you go to the office to get passport stamped. It might take several weeks. At that time, all you have to do is just to go the office and get it stamped, that's it. Just you, the applicant is enough. Your hu*****and does not have to go.
The officer wont ask many questions if he/she has no doubt about your case. Sometimes, 5 minutes is all it is going to take. I went through my own case, and i went for a friend's case as a translator. Either case, no more than 10 minutes.
In my case, the officer told us that the application is approved pending on FBI background check. After 4 weeks, we received the letter.