Former and current All Blacks will be around the sideline at the event which has become a regular on the rugby circuit.
Current All Blacks Piri Weepu and Ma'a Nonu and former All Blacks Frano Botica, Christian Cullen, and Junior Tonu'u will attend the two-day tournament.
Former New Zealand league player and New Zealand Warriors back-rower Logan Swann will also be present.
All Black fullback Mils Muliaina was also set to attend but has had to pull out to fulfil a New Zealand Rugby Union commitment.
The All Blacks will meet pupils from Arrowtown School tomorrow.
But it emerged it was a prank, leaving the pupils empty-handed.
Sevens co-organiser Richie Anderson said the All Blacks heard about the plight of the Arrowtown youngsters and wanted to do something to help.
Anderson said Cullen had previously been at the tournament as a special guest and was keen to return to the South.
Also prowling the sidelines will be former Sevens players who are now coaching teams.
Joeli Vidiri, who was part of the 1998 New Zealand team which won gold at the Commonwealth Games, is coaching the Counties-Manukau team, while Eric Rush, also a member of that gold medal-winning side, is the technical adviser for the Auckland team.
National sevens coach Gordon Tietjens will be present and will cast his eye over players.
A New Zealand training squad is due to be picked after the tournament to prepare for the Wellington Sevens tournament next month.
This year, more teams had entered than available for the 16 places.
Otago Country, which had appeared in the past two years to fill up places, was not required, while Wanganui was keen to play but did not qualify through tournaments in the North Island.
The event is in its seventh year at Queenstown, and Anderson said it was becoming much easier to run, although the weather was one thing over which he had no control.
The forecast for tomorrow is fine but there may be some rain on Sunday.
