They are probably the strictest retailer I've witnessed yet though regarding proper masks (no valves allowed), crowding, everyone's hand's being sanitized, temperature checks, etc.
I had a Genius Bar appointment at the store on Ste-Catherine St. in Montreal and it was quite the ordeal. It was made somewhat easier as the street has been pedestrianized for the summer. I'm not sure if they would have been able to pull it off had they have been restricted to the sidewalk, it would have resulted in quite the log jam.
First, you had to check in out front. They had 3 lines: 1) Product pick up. 2) People wanting to browse. 3) People with appointments.
If you were picking up a purchase they brought it out to you.
If you wanted to browse you had to wait for people to leave.
If you had an appointment you had to wait outside, wait inside in order to go upstairs, wait again upstairs until someone was available. All 2m distanced of course.
Before you entered they asked the usual questions (are you sick, have you been sick, etc.), took your temperature, gave you a mask if you didn't have one, had you sanitize your hands.
My appointment was for 5:15 and I arrived about 10 minutes early. I didn't actually sit down with someone until 6:10.
It was well organized but annoying nonetheless. I can't stand waiting in line unless I absolutely have to so I certainly wouldn't have bothered if not for my appointment.