On Saturday 1 November 2025, Her Excellency the Honourable Ms Sam Mostyn AC, met with members of the public during Government House Open Day. 

In the evening, the Governor-General, as guest of Her Excellency Erika Olson, Chargé d'Affaires, United States Embassy Canberra Protocol Office, attended the United States Marine Corps 250th Birthday Ball, at the National Arboretum Canberra.