Registration
Unless announced otherwise, Nintendo usually opened registration for Camp Hyrule in late July or early August. Although there was no limit as to how many users could sign up, registration was only open for one week. To register, one first needed to acquire a "My Nintendo" account (which Nintendo has since phased out to bring Club Nintendo to the US), and then visit the official Camp Hyrule website for further instructions.
The 2007 year camp was open from August 13 to August 23, to all My Nintendo members, registration was not required.
Read more about this topic: Camp Hyrule