Originally Posted by
HerpaYvr
Mmm I am in IAD tomorrow, so when I fly out from YOW I will ask the concierge if can exchange a couple of CDN vouchers for the US? Skip the lounge and try something new if I can

I got $20 worth of vouchers in YOW in March and ended up rerouted via IAD. In IAD I paid for part of my dinner with the vouchers. They accepted them as $20USD.
Now I'm not sure if that's the rule or the exception but I simply handed the vouchers over.