Totally understand the thought process. The meet and greet companies seem to come and go. The last trip we did (Sept) we also wanted a drop your keys and no need to call us … we used Maple Meet and Greet who have a small car park just behind the Sofitel.
It worked .. but it’s quite a decent walk to the check in areas; not quite as convenient as the “meet and greet” area in the multi story.
Of course they still drive your car elsewhere.