I will be graduating from a university in Australia in the next 6 months and intend on inviting my family over for the graduation ceremony. We are only eligible to apply for Visitor Visa (Subclass 600). The reason for applying the visa would be attending the graduation ceremony and visiting family (me).
My main question basically is can my parents change their travel plans after issuance of the visa? For instance, to visit me after the graduation ceremony instead of attending the ceremony.
At this stage I am not perfectly sure if they would be able to take time off for my graduation dates and if it's all right for them to visit after the graduation dates.