How should we use four full days on a first Sydney visit?

Choose the hotel by the walking route from a station and the meals you want at night. Early check-in is never guaranteed; ask about bag storage and a day room if rest is essential.

Set aside one day for a coast or beach walk and another for a wildlife outing that matches your interests. Check transport and booking requirements for your chosen site.

Keep arrival day light and spend the first full day around Circular Quay, The Rocks and a harbour ferry. Those sights are close enough to explore without a rigid timetable.