"The locals fed them, took them out to the lakes, we put on dinners for them and Kevin got two cakes for his 25th birthday," Mrs Grace said.
She said the tourists were very nice and their parents told them they didn't know there were so many lovely people in the world.
Through their links to a local kayaking club, friends of the Graces took them to the Hauraki Gulf where they fished, watched orca swimming and walked with kiwi in a native forest.
They also enjoyed camping and fishing trips on Lake Okareka, were treated to a good Kiwi barbecue and pavlova, a few hours on the Zorb and a trip down the Kaituna River.
"They were absolutely lovely young men ... when they left they told us they really didn't want to go.
"But it was not just us, all of our friends got involved, there was huge support for them - it's just what we do isn't it?"