It is the first time the Women's Rugby World Cup will be held in the southern hemisphere.
WREDA's Events and Experiences General Manager Warrick Dent says he expects tickets to be in high demand.
The opening match of the 2019 Rugby World Cup kicks off on Friday, September 20 as nations from all across the globe compete for the William Webb Ellis Trophy in Japan.
Full details will be announced with the Betfred Championship and League One fixtures on Sunday week, but the clubs have agreed after a meeting last week to introduce the new competition, with the final being staged on the same day as the Challenge Cup final. "Next year's repeat match up promises plenty of excitement and, for All Blacks fans at least, a result reversal".
In 2021, Australia, New Zealand, England and Tonga won't have to face each other until the quarterfinals as the four nations earned seedings, unlike previously where the Kangaroos were forced to play England and the Kiwis took on Tonga.
New Zealand and Australia were bidding for the rights.
Castle said RA would weigh up a bid for the 2025 contest.
"We've got Super W that's hugely important, that now will go to another level next year, the growth in women's participation in Sevens and XVs is double, nearly close to triple digits in some parts of the country and also sometimes in non-traditional states", she said.
"I think it's also the overwhelming support we've had from the rugby community".
"I'm hugely excited the event will be held here", she said.
"When you go through these processes you need to take stock and have a look and see".
"Oh heck yes, it's like any game when you go in you've got to feel a little bit of nerves but I think when you go into something like this you've just got to bring your A-game and that's exactly what we're doing or what we're trying to do and we can only present what we think is a really excellent bid and hope that reason wins in the end".
The tournament's shift to the southern hemisphere will reflect the rapid growth in the women's game in Australia and New Zealand. "They had a very strong bid".
"We believe the introduction of the 1895 Cup will give that relationship another boost".
"We have already said we're keen to host the men's World Cup in 2027 so all of our focus moves to that now".