Abiola2016

Just wait for the letter then leave home early this time.

Plenty of samples on youtube.
 
They asked my wife how we met, where we traveled,  about us living together in Mexico, my job,  my family, our wedding.  That part was pretty easy

You'll get asked about your marriage/questions about your spouse.  You present whatever documents you brought to the officer, and answer any questions the IO may have about those documents.  You'll spend some of your time just confirming info with them that they already know (your marriage date, birth dates, etc.).  You'll spend some more of your time just silently watching the IO either type on their computer, or shuffle some paperwork around while they hole-punch stuff and add it to your file.  
 
Relax...if you have a rather straightforward case, and a bonafide marriage with enough evidence already submitted to support that, you'll be fine.
 
Breathe.

That's not really urgent. 
 
If you know your spouse and your marriage is legit then you really dont have to worry about questions. You got this.