"Although they are not in the same training phase as us, it's still great to have some of the best international athletes here to compare ourselves to and lift our level."
Fox won K1 silver at the London Olympics and bronze behind Jones in Rio. The 22-year-old has impeccable paddling pedigree - her father Richard competed for Great Britain, finishing fourth in the 1992 Olympics and winning five world titles, while her French mum Myriam won two world titles.
Younger sister Noemie is also competing this weekend, with Fox hoping New Zealand's fickle summer finally relinquishes its steady southwesterly air-flow.
In the men's field, Great Britain's Joe Clarke returns to New Zealand for the first time since winning K1 men's gold in Rio, having bolstered his Olympic preparations with an intensive training camp on the West Coast last year.
France's Mathieu Biazizzo is the top-ranked paddler, however, ranked No 3 in the world by the ICF, with Ondrej Tunka (Czech Republic) and Australia's Lucien Delfour also ranked above Clarke.
Delfour, fresh from winning the New Zealand Open on the Mangahao River near Palmerston North last weekend, rates the Vector Wero course as a massive challenge.
"It's probably one of the hardest courses in the world at the moment, not because it's big, but because it's so technical," Delfour said. "It's great that New Zealand has an artificial course of that size and it's high quality but it's hard work physically - you've just got to power yourself all the way down."
Slovenia's Matej Benus is the top-ranked C1 men's paddler in the world at the moment, returning to New Zealand after finishing second at the Whitewater XL in November.
His keen rivals this weekend include Pierre-Antoine Tillard (France) and Ryan Westley (Great Britain), while Tauranga's Ben Gibb and Patrick Washer are the highest-ranked Kiwis in the field.
New Zealand-based Pacific Island paddlers competing this weekend include Tauranga trio of Daniel Tuiraviravi, representing Fiji, and siblings Bryden and Ella Nicholas, who both represented the Cook Islands in Rio last year.
Entry to Vector Wero is free for spectators, with heats in both C1 and K1 starting this morning and tomorrow and Monday featuring semifinals and finals.