Just did my interview today! My case was approved and now I'm waiting for my oath date.
It was pretty simple.
The security guards didn't let me until 15 minutes before my appointment time.
Once I got in, I just completed the check-in process with the receptionist, who took my photo and fingerprints, and confirmed the appointment time in the letter.
The officer came out to the waiting area and called me in right on time.
First she made me swear that I will tell the truth and nothing but the truth while standing.
Then after sitting down she started with the civics questions. I got asked 6 questions verbally, along with reading 1 sentence and writing 1 sentence on the iPad. Questions were straight from the study guide, nothing complicated.
After the questions, she went through my application and ask some clarification questions, like do I go to Canada a lot, have I traveled within the past 5 years, etc. Followed up with do I understand the pledge of allegiance and do you agree/accept the constitution. This is also when I mentioned I had a traffic ticket. I just mentioned it to her and she didn't have any follow up questions.
At the end of it, I was given an opportunity to ask questions but I didn't, I was ready to GTFO lol.
Entire process took maybe like 30 minutes. Longest part of the process was driving to the field office.