Are you sure? Here's a sign on Sixth Ave confirming the Gardiners Reserve name:
https://www.mapillary.com/app/?pKey=502565607595394&x=0.7&y=0.6&zoom=2&focus=photo

The park off Station St is currently also called Gardiners Reserve on the map: <https://www.openstreetmap.org/way/306122390>. But that may be wrong; it is signposted as John Stubbs Reserve: https://www.mapillary.com/app/?pKey=375608030445686&focus=photo&x=0.2&y=0.6&zoom=2

Holmesglen Reserve is not named on the map, but appears to be further south of here, off Warrigal Rd & Power Ave: https://www.mapillary.com/app/?pKey=297956951822296&focus=photo&x=0.7&y=0.2&zoom=1