I am flying AC from YHZ-HKG-YYZ on Nov 2 and return from NRT-YYZ-YHZ on Nov 14. My eUpgrade points is only good for one way which I planned to use on my inbound.

I got upgrade offers a couple times at the airport at the past couple months because my original cabin was full, they said. I hope I can be lucky again. So Just wonder how much possibility I can get this kind of offer again on my outbound?

Additionally, I am connecting CX at HKG to Taiwan. This is my first time to transfer at HKG with different carries. Do I need to get my checked back out and check them back in at CX counter there? or AC can do this for me from my departure city?