Asked why the royals held such a fascination, Mrs Long said she wasn't sure: "I guess I've just grown up with them, to be honest. I've just moved from one royal to the next."
Her purchases come from all over the place. Many are picked up online. Her most recent purchase was from a woman in Kerikeri, selling her late husband's collection of Queen Victoria pieces.
So, to this weekend's high tea. She's got the cakes made; the pictures are on special edible paper ordered from Hamilton. The cupcakes, too, each have their own royal image. The best china - not the royal stuff, that stays in the cabinets - has been carefully washed.
Mrs Long has invited about 20 friends, family, and fellow royal fans - "people I've bought things from, people I thought would be interested".