Take the F1 Manly Ferry from Circular Quay for a 30-minute scenic harbor cruise that offers the best views of the Opera House at a fraction of a tour cost.

Stand on the left side of escalators in train stations and shopping centers to allow people in a hurry to pass on the right.

Walk the "Bondi to Coogee" coastal trail (6km) for stunning cliff-top views and sea baths; start before 9:00 AM to avoid the midday heat and crowds.

Avoid the "BridgeClimb" if you're on a budget; walk across the Sydney Harbour Bridge pedestrian walkway for free or visit the Pylon Lookout for a small fee.

Swim only between the red and yellow flags at beaches like Bondi or Manly; the "rips" (strong currents) are powerful and dangerous for tourists.

Carry a reusable water bottle and use the "Sydney Water" stations found in major parks; the tap water is safe and high-quality across the city.

Watch out for "Sunday/Public Holiday surcharges" at cafes and restaurants; an extra 10% to 15% is often added to the bill on these days.

Explore "The Rocks" on Saturday or Sunday mornings for the open-air markets featuring local artisans and street food.

Use the "F4 Pyrmont Bay" ferry to reach Darling Harbour and Barangaroo; it’s more scenic and less crowded than taking the train or bus.

Visit the "Royal Botanic Garden" at sunset; it’s free to enter and offers the most iconic "Mrs Macquarie's Chair" photo spot of the harbor.

Stay away from "Kings Cross" if you're looking for the old nightlife scene; most of the vibrant bars and clubs have shifted to Surry Hills and Darlinghurst.

Use "Uber" or "DiDi" for ride-hailing; they are generally more reliable and cheaper than traditional Silver Service taxis.

Look for "Happy Hour" specials between 4:00 PM and 6:00 PM at CBD pubs to save on expensive alcoholic drinks.