Citizenship

This website helped me a lot with the stress and anxiety that a process like this comes with and I promised myself that I would share my experience as soon as I was done with the interview.

WARNING: English is my second language after Spanish and a little bit of German so I apologize in advance for any grammatical errors on the post.

Location: Louisville KY
Timeline:

Feb 12 2018 - We received your application
Feb 16 2018 - We scheduled your bio-metrics appt
March 6 2018 - We reviewed your biometrics
March 7 2018 - We scheduled your interview
April 26 2018 - You attended your interview

April 26 2018 - We approved your application
Your final step to becoming a citizen is to attend your naturalization ceremony
We will mail you a letter when we schedule your naturalization ceremony.

My question is that when I check my IOE case number it saids: Case Submitted for quality review based on an approval recommendation.
and
When I login into my USCIS acct it says:
We approved your application
Your final step to becoming a citizen is to attend your naturalization ceremony
We will mail you a letter when we schedule your naturalization ceremony.

The officer told me that she will recommend my application for approval and that I pass the test but that her supervisor had to approve it and that I will be getting the oath letter if is approved in a few weeks.

These are my questions:

1 Is that normally how it goes?
2 Whats that quality review based on approval recommendation
3 How long does it normally take after the interview to get the oath letter
4 Last but not less important, should I be worried about that quality review or is that normally what everyone gets?

Interview details: The officer was super nice. The writing and reading questions even for a non English speaker is easy

Writing : California has more people
Read: What's the state that has more people?

Questions : Under our Constitution there are 4 amendments about who can vote. Describe one
What state borders Mexico
Name the Vice-president
If the President can't serve who becomes President
When was the Constitution written
Can't remember the last one :(

Tips: Go well dressed for God's sake, No hats, no tennis shoes,
Dress pants , long sleeve shirt and dress shoes if you can men.

Women: Dress accordingly. You know what I mean :)

Both: Be calm, go easy with the cologne / perfume. so you don't overwhelm the interviewer. Look to their eyes. CELLPHONES OFF. Don't sit right away when you get in because you will have to swear you will tell the truth as soon as you get in the office.