The holiday island of Bali could make sex outside marriage illegal - with culprits facing time in jail.
Lawmakers in Indonesia, which governs Bali, have put forward a set of hardline new morality laws.
The Australian government today updated travel advice to its citizens in response, warning them the legal changes were expected to pass next week.
Australians are among the leading visitors to the holiday island, but the resort is also hugely popular with Brits.
The changes would see extramarital sex banned, along with same-sex relationships, and severely reduced access to contraception and abortions.
But the plans have sparked an international outcry.
Indonesian President Joko Widodo has pleaded with Parliament to delay the changes amid fears they will restrict citizens' freedoms and deal a major blow to the country's tourism industry.
He has called for the vote, which was expected to pass next week, to be delayed.
Andreas Harsono, senior Indonesia researcher at Human Rights Watch told Reuters: "Indonesia's draft criminal code is disastrous not only for women and religious and gender minorities, but for all Indonesians."
"Lawmakers should remove all the abusive articles before passing the law."
The changes to the penal code would hold drastic consequences for Indonesian couples who already cohabit outside marriage, as well as LGBTQ communities and women.
Under the proposed changes, sex outside marriage and all same-sex relations would be illegal, and charges could be laid if a complaint was made by a parent, child or spouse.
The vote was due to take place next week on a bill widely seen by rights groups as another step toward increasing moral conservatism in Indonesia.
Other draconian new laws being considered include making it illegal to criticise the president, introducing a four-year jail term for abortions in the absence of a medical emergency or rape, criminalising "fake news", bestiality and black magic, and banning the display of contraception to a minor.
Gus Agung, head of Bali's Tourism Board, told Australia's ABC the views of the regional government in Bali "are not always aligned with Jakarta".
"The Hindu culture accepts everyone who comes to Bali to enjoy the island. The influence of hardline clerics in Jakarta has no effect in Bali," he said.
In calling for the delay to the new laws, Indonesia's President Widodo told a televised news conference he had decided a number of articles of the penal code needed further review after input from various grooups.
Parliament is able to decide whether to accept the president's order.
However, experts told Australian media politicians would be unlikely to challenge his authority.
