Ya that's why I have decided to just go for it. As Gonna loose money either way. Even cancel this fligh and rebook another doesnt make sense
I suggested you earlier also, take the printout of all documents handy at the airport. For your brother this one is important-
"Dependant-A spouse, common-law partner or dependent child of a permanent resident or principal applicant."
Document no. 1- your status copy ( pr card or citizenship copy)
Document no. 2- your Birth certificate showing your parents name and in case passport copy also if it shows your parents name
Document no 3- "who is immediate family member sheet"
Document no 4- Dependant child description copy ( as above)
The above document clearly mention dependant child of principal applicant. This part should be highlighted( use the highlighter).
At the airport it all depends how confident you are and all the documents should be handy.
We have already travelled on 20th September, even before asking him I took out the papers and handed to the person for check, he just overlooked and handed back to me and said- please move. In case if the person at the airport ask, your parents should explain. 99.9% I am bit sure they will not stop.
In Canada the immigration staff is very cooperative.
Moreover your Father must be Primary Applicant and mother & brother will be part of the application. They all have to do together.