Short answer: don’t underestimate the UV exposure, don’t try to see the whole country in 10 days, don’t drink and drive (Australia has zero tolerance and high penalties), and don’t fail to declare food and biosecurity items at customs. Those four mistakes account for the bulk of trip-ruining tourist incidents.
Here’s the full 12.
1. Don’t Underestimate the UV
Australia has the highest skin-cancer rate in the world. UV in summer can reach 11+ on the index; the British 6-out-of-10 mid-summer reading is roughly equivalent to a Melbourne April day. Sunburn at 30 minutes of unprotected exposure in summer is normal; melanoma rates among British and northern-European visitors are elevated because UV protection isn’t culturally calibrated.
Wear sunscreen daily, even in winter. SPF 30+ minimum, SPF 50 in summer. Reapply every two hours outdoors.
2. Don’t Drink and Drive
Australia has zero tolerance for drink-driving (BAC limit 0.05 for full licence holders, 0.00 for learner and probationary licences). Random breath testing is routine. Penalties: license suspension, fines from $1,500, and up to 12 months imprisonment for high-range offences.
Don’t risk it. Rideshare is widely available; trams, trains and buses cover the inner city; taxis are still common.
3. Don’t Try to See the Whole Country in 10 Days
Australia is a continent. Sydney to Melbourne is a 10-hour drive or a 1-hour flight. Sydney to Cairns is 24 hours by car or 3 hours by flight. Melbourne to Uluru is 22 hours by car. The “Great Australian Loop” is not feasible in two weeks.
Pick one or two regions. Sydney plus Melbourne, or Melbourne plus Tasmania, or Sydney plus the Reef. Three regions is hard; four is impossible without spending half the trip on planes.
4. Don’t Fail to Declare at Customs
Australian biosecurity is strict. Don’t bring fresh fruit, meat, dairy, plant material or wooden items into the country without declaring. Penalties for non-declaration start at $440 and can reach $2,664 plus criminal charges for serious cases. See what foods can’t you bring into Australia.
5. Don’t Drive on the Right
Australia drives on the left. UK and Irish visitors are fine; North American, European and most Asian visitors will need to actively recalibrate. Roundabouts are clockwise. Multi-lane road merging works in the same direction as the UK.
6. Don’t Tip Like You’re in America
Australian hospitality wages are mandated by Fair Work — full-time hospitality wages are around $25–$30 per hour with weekend penalty rates of 25–50% above. Tipping is not expected. A 10% tip for genuinely outstanding service is generous; the standard expectation is paying the menu price and that’s the transaction.
7. Don’t Underestimate the Size of Things
The Great Ocean Road is a 250 km drive. Sydney to Melbourne is 880 km. Even a “short trip” within Victoria — Melbourne to the Grampians — is a 3-hour drive each way. Plan for distances that are larger than they look on the map.
8. Don’t Eat at the Tourist-Trap Restaurants
The restaurants directly opposite Federation Square, on Southbank waterfront, and at Circular Quay (Sydney) are tourist-priced and below the city’s normal restaurant standard. Walk three blocks from any major tourist landmark and the food prices drop and the quality rises.
9. Don’t Skip the Public Holidays You Don’t Recognise
If you’re in Melbourne on Anzac Day (25 April), Cup Day (first Tuesday of November), or the Queen’s Birthday weekend (mid-June) — many businesses are closed or run reduced hours. Check public holiday dates before booking restaurants. The same applies to Easter Monday and the Christmas-New Year period (24 December to 1 January).
10. Don’t Try to See Wildlife in the Wild Without a Plan
Australian wildlife mostly hides during the day. The Penguin Parade at Phillip Island is a structured wildlife experience; spotting kangaroos in suburban Australia is almost impossible. For reliable wildlife viewing, the open-range zoos (Werribee, Healesville Sanctuary) and the major aquariums are the practical answer.
11. Don’t Carry Cash You Don’t Need
Australia is largely cashless. Almost everything accepts contactless card payment, including trams, taxis, and street food. Large physical currency carrying is unnecessary; £200-equivalent in cash for emergencies is more than sufficient for most trips.
12. Don’t Skip the Rural Driving Rules
If you’re driving regional roads (Great Ocean Road, Yarra Valley, country Victoria), be aware: kangaroos are road hazards at dawn and dusk; rural speed limits drop sharply through small towns (50 km/h or 60 km/h, sometimes 40 km/h around schools); fuel stations are spaced further apart than in the UK or Europe — fill up when you see one in the regional driving.
What This Means for You
The most-likely tourist trip-ruiners are sunburn, customs fines, and an over-ambitious itinerary. Solve those three before you fly. Everything else on this list is recoverable.
For more, see what is the silent killer in Australia and what not to bring to Melbourne.