He said he was extremely grateful to the Eden Park Trust for holding the Mates on the Field tribute. It includes a giant poppy and 492 personalised white crosses erected on the field. A further 12 crosses honour the other All Blacks who died in WWI.
Free stadium tours will be held every hour, on the hour, from 9am. Wreaths will be laid and the Last Post played at a dusk ceremony at 6.30pm.
The ceremony will also feature a Warbirds fly past, the New Zealand Navy Band, and rugby legend Buck Shelford leading a haka.
Meanwhile, Kensington Palace says Prince William will attend the New Zealand commemoration of the Battle of Passchendaele in Belgium on October 12. At least 843 New Zealand troops died on October 12, 1917, the most on any single day of combat.
The commemorations will be at Tyne Cot Cemetery, the largest Commonwealth War grave site. It contains the graves of 520 NZ soldiers. Others killed in the Passchendaele conflicts are listed on its Memorial to the Missing.
In Wellington on October 12, commemorations start at 3pm at Pukeahu National War Memorial Park.