The cache is not located at these coordinates. You will need to complete the Adventure Lab "Miami Ocean Views" to find the clues to the bonus cache. This area has a quieter atmosphere than its busier neighbours of Burleigh and Broadbeach. You can walk all along the path and still see the ocean. There is a playground, gym equipment and toilets nearby. You can also grab a snack at the nearby cafe.
There will be muggles to content with so you'll need to be in stealth mode. Weekends will be trickier.
The cache container is big enough for trickets. No pen. Please cover well when you re hide the cache. Happy Caching.
The final coordinates should look like this S028 03.AAB E153 26 CDE
Adventure Lab link is http://adventurelabs.page.link/udwv
Congradulations on *FTF* go to Auswanderers.