And while I’d definitely prefer to do the Forts Walk in joggers (‘sneakers’ to Americans), it can be done in thongs (‘flip-flops’ to you!) It’s not a hard walk at all. But you definitely need sunscreen, and if you’re going in the middle of the day, take water too.
Also, re: possums – You should hear them when they fight with each other… it’s actually quite amusing One night at about midnight when I was on Magnetic Island I heard two running up and down the roof, hissing and fighting (I was about 10 at the time), and then one fell off the roof with a ‘plop’ on the patio outside. Then I heard the other scurry down a drainpipe, and continue the fight on the patio. We also had one living in our roof at one stage (I live in Townsville).