Employment Based Greencard

We had the interview yesterday and it took overall 20 minutes. We went there an hour earlier and waited for 15 minutes and came out in 40 minutes,

The officer was very nice. He had a very friendly talk. Our 4 and half year old kid had very good conversation with him. He talked so much to our kid more than us. Our kid was very helpful during the whole process and it was like, she took the whole responsibility of completing the interview for us. When we started, he said we are going to start with I485 question with both of you together and then we will go with other documents. Then our kid asked him "No questions for me ?". Then he got interested and started conversing with her.
Question to her were like First Name, Last Name, Date of Birth, Father's name, Mother's name, address, date of birth, birth place, any brothers and sisters. Is your mother married and to whom? Is your father married and to whom? Are you the only kid to them? favorite princess? school & class? Then she wrote her name on the form and I signed for the kid.
We are very thankful to our kid that she answered everything correctly and she kept all of us relaxed during the whole process.

Question to us and the documents asked for
1. I485 questions
2. Name and Address
3. EVL
4. Paystubs
5. W2 & Tax return
6. Medical

Officer mentioned that we will get the card once our PD becomes current. So the wait starts again.