I was invited to the inaugural event in YEG, back in May 2015 I think. On the event, KLM clearly said they would like to thank Royal Dutch Shell and Alberta government. They offered a draw to win 2 R/T tickets to Europe that night and I think someone from Shell got it... Did meet a lot of personnel and managers from KL and DL, and surprised to see how closely they worked together (ticketing office, Sky Bonus, complaint handling).
Later that year I took the flight in June, the flight (A332) was around 70% full for a weekend flight. I had two seats in a row in Economy Comfort. I personally believe there shall be financial funds from the AB government and a contract between Shell and KLM to reserve a certain amount of seats on the AMS-YEG route otherwise this route may not sustain.
PS: >30% of the time this route has promo award in J, mostly 50% discount, very attractive but unfortunately, I have moved back to the east later that year though.