Fair enough, I've been in those situations where the service on the ground side of the gate matters.

> "Get in line" vs "you are already rebooked". (my Air Canada experince.)

Which of the two was the Air Canada experience?

"you are already rebooked" -- they were fab.

Same here for KLM.

SkyTeam in general has superb service. I have in the past decade flown Delta, Air France, KLM, and Aeromexico, and all have curbstomped my American Airlines and British Airways experiences.

The service on the plane isn’t a big deal, but in my experience strongly resembles the service off it.

Dang no way? I had a terrible experience with them (tbf it was half a decade back at this point). We were in line to check in, something like 1.5hrs before a one hour flight. The line was agonizingly slow (only 2 of like 5 check-in counters were staffed), and when we got to the counter they said we were too late, missed the window for the flight. We only had carry-ons, were 3min late for their arbitrary window, and the plane still wasn't scheduled to leave for an hour or so.

We were clearly in line before their deadline, were certainly going to make it to the gate before they even opened for boarding, had no checked bags, and they made us buy new tickets. The cherry on top was that they ran flights every hour, so we bought the ticket for the next hour but the gate agent let us on the original flight we had- so they basically just forced us to pay double for our flight.