Today, I had my landing interview scheduled at 2pm at Etobicoke office. When I arrived I went to the wrong entrance, went to Service Canada instead (LOL); they are one besides the other. Make sure you are in the right office, it has a big desk in the front, two officers sitting behind and I big IRCC sign on the wall. I arrived 30 minutes earlier and went straight to the front desk. One of the security officers gave me a number DXXX to wait and highligthed my name on his list. I went straight to the waiting area. There were 26 people ahead of my number. 5 out of 9 booth were working at that time. I was called at 2:40pm. The questions asked in the interview were basically if I ever been arrested or commited any crime in canada, if I have any dependant overseas, if I ever been deported, my marital status, current address and the last time I entered to Canada. Gave my pictures and signed my COPR. After I that I went straight to Service Canada (next door) to get my new SIN and also went to Ontario Service to update my status and new address since I recently moved.
Hope this helps. Good luck on your interview!!