I attended the ceremony on Nov. 3, the status updated to complete on Nov. 4, Nov. 5 and 6 are weekend, the certificate was mailed on Nov. 7, I received it on Nov. 10. I guess it was pretty fast.
When they check my IDs before the ceremony, the agent asked me if I need the citizenship certificate for passport and travel soon. I guess you can discuss the options with the agent who checks your ID.
If you submit your application on paper, you need to write a letter to request urgent processing and write "Urgent Processing" on the envelope. The IRCC website has the instructions.
Type: Paper application
Location: New Brunswick
Physical Presence Days: 1100
Application: Single
Application sent: August 15
Delivered: August 17
AOR : August 19