A 48-strong delegation from Otaru, led by Otaru Mayor Katsumaro Yamada, will be formally welcomed at 11am.
And at 1.30pm Otaru master sushi chef Masahiro Nakamura will demonstrate his sushi-making skill, with about 150 visitors able to taste his work, museum organisers said.
At 2.30pm, Ngai Tahu restaurateur Ron Bull will explain the ecology and significance to Ngai Tahu of titi, also known as mutton birds, and this food will also be sampled.
Members of the public can also learn more about the Ainu culture of Japan by trying their hand at kirigami activities - involving the traditional art of cutting folded paper - at 10.30am and 2pm.
Museum visitors can also watch demonstrations of Shodo calligraphy (1pm) and Seishinkan Bujutsu martial arts (at noon).
People are also invited to let their fingers create traditional Maori woven crafts, through harakeke weaving activities, at 3.30pm.
Museum exhibitions, planning and development director Clare Wilson urged Dunedin and Otago people to celebrate this " very special occasion" tomorrow.
The Otaru and Otago museums have also jointly developed a "Contemporary Traditions" exhibition which runs at the Otago Museum until November 7.
This show focuses on modern interpretations of Maori and Japanese art, and includes more than 40 items of contemporary Ainu art.
The Ainu are the indigenous people of Japan, having a distinct language and customs, different from other Japanese.
