Lauren Funnell wrote to her page, "When I woke up this morning I had no idea that when I got to work today I would be told that the people I was taking on a quad bike tour was....David Beckham and his sons!!!
"That's not even the half of it, POSH SPICE WAS ALSO AT GLENWORTH VALLEY, A FREAKING SPICE GIRL WAS AT MY PLACE OF WORK AND DO YOU THINK I HELD MYSELF TOGETHER?! I MOST CERTAINLY DID NOT!!
Funnell adds the experience was so overwhelming, she started "shaking and crying."
"What an incredible experience I couldn't be more grateful and I'm going to spend the rest of my night in my own little heaven watching Spice girl vids."
Sarah Gaunt wrote, "Today was an easy reminder as to why I love my work place...the experiences I get to enjoy, the people I work with and from time to time the people I get to meet.
"Getting to meet this absolute gentleman and take him and his sons Quad Biking with was one of those enjoyable experiences!"
David Beckham stands alongside a host of Australians who have also previously been announced as ambassadors for the Invictus Games, including Olympic gold medallists Anna Meares and Ian Thorpe, comedian and radio host Hamish Blake and Sir Peter Cosgrove.
“We’re thrilled to welcome #DavidBeckham as an #IG2018 ambassador,” Invictus Sydney tweeted earlier this year.