Waisea Nacuqu and Apete Daveta are returning to Fiji after getting injured in the Sydney 7s over the weekend.
The two players have been ruled out due to knee injuries.
Fiji Airways Drua flanker Vasikali Mudu has been called into the team as a replacement for Daveta.
Meanwhile, the captains of all 16 teams had a photo shoot at the Hobbiton, a rural movie set used for the Lord of the Rings and the Hobbit film series yesterday.
It was the official captain's photo, which by tradition is taken at a local iconic site in the region where the event is being staged.
60% of the tickets have been sold to the Waikato region with 10,000 people are expected from outside the region.
Fiji will take on Wales in their first game at 10.36am Saturday, they will then face Spain at 2.02pm before taking on Australia at 5.50pm Saturday.
The medal quarterfinals will start at 10.36am Sunday, the semifinal will be at 2.49pm while the final will start at 6.03pm Sunday.
