Wondering if I have options… travelling yyz-Yvr may 11th. I purposely picked AC 103 over AC 184 (8am vs 7:30am) because it was an Airbus 330-300 and a 2-4-2 layout making sitting with just my hubby easier. Two weeks ago it was changed to a 777-300. If that’s the case I would rather bid for an upgrade into business (booked economy flex)but I’d rather be on the Dreamliner at 7:30 than the 777 at 8am. How easy or hard is it to switch to the earlier flight?