I wish to apply for a visit visa, to accompany my son (18) who is starting university there this fall, for a few weeks. I am applying for both, my visit visa and his study permit through my ircc account. Assuming my purpose of visit should be specified as 'Other' in the form (because other options such as Tourism don't match my purpose), why am I being asked to provide an invitation letter? Is it a necessity? I do have a nephew in the same city but what would he write in the letter? Should the study permit be applied for separately through an account with my son's name? How can I go about this?