Hi,

My sister (non E/non*G on a Tango fare) and I traveling on same flight numbers and dates, but different destination...
I am traveling YYZ-YYC-YVR, while she is traveling YYZ-YYC only.

Two questions:
1. Can we both use priority check-in?;
2. AC says that checking bags on a Tango fare with no status means you have to pay $20. My sister and I are on the same flight upto YYC. To avoid paying the $20 is it possible for me to check-in her bag on my name and flight, but only upto YYC? (I would never do this for a stranger, but since we are siblings, I trust her). 2a. Are there any complications I/we should be aware of?