This was confirmed by the Chairman of the Organising Committee, Jay Whyte.
Every year, Fijian rugby fans get to meet their rugby idol, who is in the country to be a chief guest at the tournament.
Caucau is a retired rugby player who last played professionally for Northland in the ITM Cup. His nickname is the "Bua Bullet" as he hails from the province of Bua.
The 39-year-old was described by the media as "one of the fastest and most flamboyant players in international rugby.
Caucau also played for French clubs Toulouse and Agen.
