Now, I just tried this and it wanted to charge me for the seat selection so I did some digging and SE/E only bypass the fees on Latitude fares, on Tango Plus fares only SEs bypass the fees (see below). I might be a touch biased as an E but that's moving in on ridiculous. Quite disappointing... Haha, for exit rows all the way through my intinerary (which on a 77W some of which I could pick for free a few days ago) they wanted over $200..
Anyway, it is what it is.
http://www.aircanada.com/shared/en/c...tangoplus.html
Preferred seats offer extra legroom and are usually located in bulkhead and exit rows.
A bulkhead is a physical partition, typically a wall, but sometimes a curtain or screen. Bulkhead seats are located directly behind such partitions.
You can select your Preferred seat after you've confirmed your booking.
If you're a Super Elite customer, you and your travel companion(s) on the same booking can enjoy complimentary Preferred seat selection.