CX Staff Travel querie

[skibeagle]

Can anyone tell me what the approximate cost of a Z fare ticket is say between Vancouver and New York and do CX permit J class (business) Z fares as well as economy ?

For an off duty pilot, can you ride in the flight deck if the cabin is full ?

And one last one, what is the policy regarding significant others ? Can they ride on passes (if you're not married) without accompanying the employee ?

Thanks in advance for taking the time to reply.