we're Australian, although currently we are in the middle east.
We planned to visit once every three years...... however we went in May 2007 because there was a really good deal on the transatlantic cruise on the Magic - so we stayed 10 days before hand... and we are off again in December for 10 days so the kids can see all the Christmas decorations.
So as you can see our once every three years didn't really work... However we are really pleased we got the points, are definitely making the most of them and are considering adding on more.
We also know at least one other Aussie family that are members and tend to visit every year. After all it is only a "short" flight away.