Kings Park is normally the centre of Anzac Day commemorations in WA but this year more than 300 families will descend on Rottnest Island to learn the importance of playing outdoors and mateship.
Nature Play WA, a Department of Sport and Recreation initiative to encourage unstructured, outdoor play, is inviting families to attend a dawn service and family fun day on the island.
Father-of-three Tim Swart said his children were looking forward to the activities planned at their favourite holiday spot.
"Anything which gets people into the outdoors and doing things as a family group is a positive thing," Mr Swart said.
Victoria Cross recipient Cpl Ben Roberts-Smith encouraged parents to give children the chance to enjoy "free-range" play.
"Today our lives are increasingly spent indoors and many of the freedoms and lessons past generations of Australian kids took for granted are at risk of being lost," he said.
Nature Play WA chairman David Roberts said outdoor play was an essential part of childhood that led to healthier and more active children.