I don’t mean to sound flippant here, but you are flying on Air Canada. The airline’s consistently poor customer service and mediocre OTP are very well known, and widely documented.

For next time, flying on Korean Air would have given you a direct flight from ICN to YYZ that isn’t any longer than the AC flight to YVR was, saving you a stopover and about five hours of travel time while delivering much better service and food. The fares between Korean Prestige Class and AC J are generally comparable, so unless you really need the miles to make status there’s simply no justification for subjecting oneself to the flying headache that is Err Canada.