Last minute touches to the fancy outfits will also be well under way, especially those lining up for the best dressed woman and best dressed man competitions. The highly-popular body art competition has been canned for this year.
While many punters will be zooming on e-scooters to Addington, it's doubtful that many will take the same form of transport away from the track later today.
Last year, police came and picked up the hundreds of distinctive green Lime scooters from the racecourse during the afternoon after safety fears.
Today, a Lime spokeswoman confirmed the same will happen this year.
"We work with all event providers to balance the need for convenient and reliable transportation while mitigating any risks to our riders and others in the community," said Lime's public affairs manager Lauren Mentjox.
"On Cup Day, we will be working with police and event staff to remove scooters from Addington to avoid any issues with drunk riding."
The big race, the 3200m Christchurch Casino NZ Trotting Cup jumps at 5.12pm, with Thefixer, last year's winner, and Spankem the hot favourites.