I'll wait until the crowd thins out.
The night I went in Port Perry there was nary a crowd. To the contrary there was unfilled appointments and empty seats....that was days before they finally decided that opening up things to more high risk eligibilities and essential workers made more sense as opposed to having empty seats.
It's still a pretty smooth system though if you go to one of the clinics - you pick a time, arrive 5-10 minutes before, and you're in and out in 15-20 minutes. I was literally out in 20 the night I went and people I talked to who were there earlier in the day during the busier hours said the same thing.