I applied my family RP visa for my wife and son last month and it was rejected after 3 days of submission. I went to the immigration office and they gave me an appointment date. I attended the interview. They asked me 3 basic questions and the status was changed at the same day and approved very next day. If your documents are perfectly submitted and you are eligible to get the visa then it will be approved. The 3 basic questions they asked me are;
1. How much is your salary?
2. What is your profession?
3. Who is your sponsor?

What I would like to suggest you that rather browsing the internet, focus on the documents that you need to submit.

Wish you “Good Luck".