.
I did not want to take a risk.
So, I gave the copy of my confirmed tickets along with the passport.
It is okay to change your itinerary if required, only thing that we have to keep in mind is to inform CIC/IRCC 20 days ahead of our arrival.
You are right. There is no point to take risq at this stage. I ve submitted my pp along with confirmed tickets on 4th sep. Still waiting ...