Have a trip home coming up in less than two weeks. Doing the hotel quarantine (YYZ) first and then plan to quarantine with family members nearby for the remainder of the two weeks.

It's a low-risk situation (will have my own bed + bath + away from family), other than the fact that family is in their 70s. I'm unclear on whether I need to present a letter outlining my quarantine situation and also a letter from my 70+ family explicitly consenting to letting me quarantine with them? Or do I just tell the border officials what the plan is, and give them the phone number for my family?