Members of the royal family have been present in New Zealand since the late 1800s, their reasons including participating in military manoeuvres or undertaking official royal tours. Usually important milestones, anniversaries, or celebrations of New Zealand culture will warrant the presence of the monarch, while other royals will be asked to participate in lesser occasions. "Official duties" involve the sovereign representing the New Zealand state at home or abroad, or her relations as members of the royal family participating in government organised ceremonies either in New Zealand or elsewhere. The advice of the New Zealand Cabinet is the impetus for royal participation in any New Zealand event. Such events have included centennials and bicentennials; Waitangi Day; the openings of Commonwealth and other games; anniversaries of Māori treaty signings; awards ceremonies; anniversaries of the monarch's accession; and the like. Conversely, "unofficial duties" are performed by royal family members on behalf of New Zealand organisations of which they may be patrons, through their attendance at charity events, visiting with members of the New Zealand Defence Force as colonel-in-chief, or marking certain key anniversaries.