Почему нет? Туристическую продлевают не выезжая. По получении разрешения делаешь разворот в Ниагара Фоллз.
If parents and grandparents are already in Canada and their visa will be expiring soon, what should they do? Will they be eligible to renew their status from in Canada?
An application for a new single- or multi-entry visa must be done from outside Canada at a visa office.
However, parents and grandparents who are in Canada on an authorized stay of up to six months may apply for an extension of their status of up to two years by submitting an application to the Case Processing Centre in Vegreville, Alberta, as long as they meet all the criteria for the Parent and Grandparent Super Visa. These applications will be examined on a case-by-case basis.
я так понимаю что каждый раз надо будет выезжать за пределы канады