At the listed coordinates you will be nearby some tennis courts. As at the end of 2020 these courts are being re-built. Gather some details from Rowley Reserve and travel a short distance to the final location which is at:
S 34 52.(A+D)(A+A)(B+C)
E 138 32.D(A+B+C)A
where:
A = number of letters in the word embossed on the base of the park bench
B = number of windows on the east side of the courtside building
C = number of rows of diamonds on the Rowley Reserve sign
D = number of lights above the toilet block
Checksum of decimal minutes = 32 (thanks pie-mom for alerting me to my error)
Happy Hunting
Cache Instructions
Once you find it, please open the yellow end. When putting back, insert yellow end first and align the magnets so the container is retained in the caddy.