About ArriveCAN:
I drove into Canada from WA state today and forget to use the ArriveCAN app. The border official told me that without that being done, I would have to quarantine, but she kindly pointed me towards the u-turn. I went back through US customs, filled in my arrival info and passed through the Canadian border with just another Covid test there at the border (plus I had to enter with a negative test no more than 72 hours prior).
When I first entered Canada in June by boat, I also had to have my arrival information pre-entered in ArriveCAN.
It’s literally takes just minutes to use the app. I would strongly suggest it for any boaters planning to enter BC once the border is open.
Note: I am a US citizen with a temporary Canadian work permit.