Darrin Balcombe, chief-executive of Hawke's Bay Racing Club said "I can't think of another event this size."
Balcombe said there will be lots to look forward to for guests.
"There will be live music, we have four or five DJs playing tomorrow, plus great food. The fashion show will be at the front of the stands, which will be great. We also have a competition for best punter of the year".
The Caroline Meo Bayley's Fashion on the Field will be held at midday.
It will have five categories, including best designer item, best headwear, best men's and ladies' racewear, best art deco wear, and the overall best dressed. The candidates will be judged on appropriateness of the daywear outfit for race day, spring colour palettes, style, originality and confidence, and attention to detail with accessories and coordination.
The favourite for the final race is Melody Belle, which won the Triple Crown last year in Hawke's Bay. The second-favourite is Avantage.