New this this site and trying to find out how to determine R space inventoay (upgradable to Exective cabin) on a particular Air Canada flight. I have purchased Latitude class have have been waitlisted for part of my itinerary. When I look at the seat map, there are seats available in the executive cabin, but I was not automatically upgraded. How do I find out how many seats are on this R list. It is 5 months before my flight - will I have to wait until just before the flight to find out if I will be upgraded and how do I find out what order I am on the waitlist?