The cache is not at the listed coordinates and you will need to BYOP. It is located in a busy area and extreme stealth will be required.
WP1. Here you will need to count the number of blue squares, white squares, green squares, yellow squares, red squares and orange squares on the four sides. With this information, you will be able to calculate GZ.
The cache is located at S33° 56.ABC E151° 15.DEF where:
A= the number of green squares plus the number of blue squares less the number of white squares.
B= the number of white squares less the number of green squares.
C= the number of green squares plus the number of yellow squares less the number of white squares.
D= the number of yellow squares plus the number of green squares less the number of white squares.
E= the number blue squares plus the number white squares less the number of yellow squares.
F= the sum of red and orange squares less the number of white squares less the number of green squares.
Congrats to EverestHigh & MaxAdventurer on FTF.