Update:So finally my Citizenship Ceremony was completed. It was pretty smooth and quick - total it took 1 hour & 5 minutes. Finally I am a Canadian
My experience below:
1) I joined the meeting a couple of minutes before the scheduled time. I was let into the break room exactly on time.
2) 5 minutes later my officer went through with the basic instructions. I requested for an In-Person pickup of the Certificate, but request was politely denied. But was told I should get it pretty quick since I am residing in the same area. Then went back to Break room.
3) Ceremony started within 10 minutes. Total 53 participants only.
4) Went back to the break room for more waiting.
5) Finally the officer made me cut out my PR card and confirmed my address. Call ended.
6) Immediately emailed the digitally signed Oath form as instructed.
Now wait for Certificate begins..
Application was finally closed yesterday (tracker was updated today).
I called IRCC just now to find out the status of the Certificate, and was informed that it was mailed out yesterday. Since I live few blocks from their office, hope to receive the mail by Wed/Thu. Will update once I receive the certificate.