Note that even with ArriveCAN and a visa, entry into Canada is not guaranteed. In order to be eligible to enter Canada, you must also make sure you satisfy Canada’s guidelines regarding COVID-19 vaccinations and comply with their inadmissibility guidelines. Even with that, you may still be denied entry into Canada even if you have a valid visitor visa or eTA; entry is based on you meeting entry requirements as well as the discretion of the border services officer.