As Indonesia gears up to celebrate the end of Ramadan, Australians planning trips to Bali are being cautioned to brace themselves for significant travel disruptions. With millions of people expected to flood the nation's roads and airports, holidaymakers are urged to prepare for extended wait times and potential logistical challenges.

The conclusion of Ramadan, the Islamic holy month, on Tuesday evening heralds a mass exodus of workers from larger cities to their rural family homes, a tradition known as 'mudik'. This migration significantly strains transportation infrastructure, impacting both locals and tourists alike.

Australia's Smartraveller website has issued a stern advisory, emphasizing the importance of careful trip planning. Highlighting potential security risks, particularly in certain areas of Indonesia, the advisory urges travelers to exercise vigilance.

Indonesia will observe several public holidays from April 10 to April 22, contributing further to anticipated transportation disruptions. Airports, seaports, highways, toll roads, train stations, and bus terminals are all expected to experience heavy congestion during this period.

"Airports are expected to be busy. Plan your travel carefully and prepare for significant delays," warns Smartraveller.

Despite Bali's predominantly Hindu population, the island still hosts a sizable Muslim community. Travelers are reminded that stricter regulations may be enforced during this time, potentially impacting typical tourist activities.

"Don't assume everything you want to do will be available," cautions Smartraveller. "Be prepared for changes in everyday life."

As Australians gear up for vacations in Bali, the message is clear: anticipate delays, stay informed, and plan accordingly to navigate through Indonesia's festive but congested holiday season.