The party is on from 4pm to 6pm, including a fashion parade and competition at 4pm - the theme is Hats, live music, sweepstakes, competitions, and the big race on two big screens at 5pm.
Event organiser Brett Marvelly says it was decided to support the Waiariki Women's Refuge through the event because "it's such a great charity - simple as that".
"We realise there are people out there that need the support of the refuge and wanted to do our best for them. We would like the community to get right behind this."
He says the venue has big open spaces which will help with social distancing, and the event will be a lot of fun.
Brett says the Melbourne Cup Party will be a great opportunity to get dressed up and support local horse Ocean Billy.
"It's an ideal opportunity for companies to knock off a little early, come up and have some fun."
Tickets to this event are $40 per person, which includes a glass of bubbles (or beer, wine or non-alc) on arrival, with continuous light refreshments from 4pm to 6pm.
They are available from Steiners on Pukuatua St or at Rotorua Golf Club. For more details or large business/group bookings, call (027) 481 5447.
If you are keen on an early start, enter a team of four in the Ambrose Golf Tournament that tees off at 1pm. It's $20 per player.
Attendees are encouraged to adhere to social distancing rules and are encouraged to wear face masks unless eating or drinking.