"It's a really nice turnout. It's nice to give back. We all started out at this level," said van Wyk.
Other Black Caps Doug Bracewell and Adam Milne were also there.
Also helping out was Wanganui export Ben Smith, with the news he will switch club allegiances back to his hometown for the first time in four seasons this year.
Smith will be busy with Stags duties for most of the year, but will officially be registered with Wanganui Marist as a player.
"I'm going to play for Marist, obviously on October 10," he said.
"It was the early stages of my career with CD that I played over in Hawke's Bay.
"But it's what I always wanted to do - to see and play with some old friends."
Raj will also be very keen to get Smith to help him with coaching of local youngsters when he is available.
The Stags had a round of golf together at the Castlecliff Golf Club yesterday afternoon.
For people still wanting to see them, the team will be at McDonald's in Wanganui for breakfast at 9am today.