"It's such a beautiful place, it's so exciting to think we might get married there," Ms Ivess said.
They met over three years ago on a Kiwi Experience bus tour on the West Coast and hung out for a while afterwards, until Englishwoman Ms Briscoe returned to the United Kingdom.
Far from a holiday fling, their romance had only just begun.
"I hopped on a plane and went over and got her," Ms Ivess said, "and it's been just wonderful ever since."
The fun-loving couple work in tourism and hospitality - Ms Ivess manages Base (a bar and backpacker lodge) and Ms Briscoe works for Fullers Great Sights - so are comfortable with the high profile wedding's promotional and tourism angles.
As for the gimmicky aspect and sharing their big day with another couple they don't know, that is only a mild "downside".
They've met the other finalists, got on really well, and expect the event to be quite a party.
If they win they'll have only a short time to make arrangements and there is so much to think about, not least what the brides will wear and what music they'll choose for their first dance.
There's also the pressing matter of how to get Ms Briscoe's loved ones in England to the church on time - but the hitches pale amid the thrill of being this close to a winning wedding - if the votes keep coming in.