My mom had her interview today, should have been at 11:45am but they got there at 10:30am, and by 11:30am they were already out. The questions they asked her were pretty simple, who is the president, who are your 2 senators, colors of the flag, who becomes pres after pres and vp dies, they asked her the name of US nat form, who MLK is, what is the emancipation proclamation, like 10 questions. Then they had her write "I went to the post office"
Prior to that, they went thru her file, asked her some questions about previous travel, what my father does, just verifying everything that had been put on the forms.
Then she congratulated her, gave her an interview pass form, and said oath letter will come in the mail. Mine is in a few days, I'll post my update, so I hope we get the same oath ceremony, that will be a blessing.