It comes after lobby group GetUp paid $31,000 for the privilege
at a recent charity auction for the Canberra Press Gallery.
The couples plan to convince anti-gay Gillard that marriage
equality is a civil right.
The trio include Sandy Miller and her fiancee Louise Bucke, who
have been waiting for over two years to get married in their
homeland.
Speaking to the Sydney Morning Herald Miller said: "Our youngest
often asks us, `Mummies, are you going to be engaged forever? Why
don't you get married?'.
"It has been hard trying to explain that our government won't
let us get married, and he doesn't understand why everyone else can
get married and become a family legally and we can't.
"We don't want to be considered special or better than anyone
else. We only want the same rights as every other person and couple
in Australia."
GetUp said it used surplus funds from its marriage equality
campaign to pay for the event.
