Hi, I received my permanent residence visa, while with only two and half months before it expires. As a result, I am planning a soft landing. Due to some family reason, I am planning to land on the weekend and return immediately. The PR card will be mailed to address of my relatives. As a result, I will not be able to obtain my SIN after landing. I am wondering if obtaining SIN is very important or it is something I can get it later.