Ko, who arrived at the 2012 event on the back of her record-breaking win at the NSW Open, attracted thousands of spectators and she is hoping the galleries come out at Clearwater.
"It is good to hear that there is a strong field coming down for the tournament and I look forward to the challenge of competing with them."
The national championship has attracted all four champions of the event so far in Frenchwoman Gwladys Nocera (2009), England's Laura Davies (2010) and Australians Kristie Smith (2011) and Lindsey Wright (2012).
Davies has won 82 professional titles worldwide, with 20 victories on the LPGA. The 49-year-old from England, who is the first non-American to finish at the top of the LPGA money list, has won the LET Order of Merit a record seven times and is a four-time major champion.
The event, which will be staged from February 8-11 holds a special place in the New Zealand sporting landscape as with a purse of $315,000 it is the most lucrative women's sporting event in the country.