What cultural faux pas should I try to avoid making in Cairns?

"In Cairns, it's important to respect the local customs and traditions. Avoid making derogatory comments about Australia or its culture, as Australians are very proud of their country. Don't make jokes about the Australian accent or use stereotypical Australian slang if you're not a native speaker, as this can come off as mocking. Avoid discussing sensitive topics such as race, religion, and politics unless you are well-informed and the conversation naturally leads there. It's also considered rude to litter, so always dispose of your trash properly. In Australia, tipping is not mandatory, but it is appreciated for good service. However, don't feel obligated to tip if the service was not up to par. Australians value their personal space, so avoid standing too close to someone unless the situation calls for it. Lastly, remember that Cairns is located in the traditional lands of the Gimuy Walubara Yidinji people, so be respectful of Indigenous culture and customs. Avoid walking on sacred sites and always ask for permission if you want to take photos of Indigenous people or their artwork," remarked another expat in Cairns, Australia.