I recently booked a flight to Canada, and the only seats available to choose on one flight were in Economy Comfort. If I chose them, I'd have to pay an extra $39 per ticket. It's only a 2 1/2 hour flight, so I probably wouldn't upgrade normally. I'd just pick seats I was happy with.
So, if I don't choose those seats, will I just get them if no one else upgrades? But then, if someone else gets them, I might end up in the very back near the toilets. There are 5 of us flying, but I'd only upgrade on 3 of the tickets. My kids can suck it up.
Any experience or wisdom?