September to November (spring) and March to May (autumn) offer the sweetest weather - warm but not scorching. Summer (December-February) brings crowds and heat; winter is mild but you'll miss the beach swimming season. If you're keen on a specific activity like a multi-day kayak tour, check what's actually running before you book.

Longer courses and multi-day experiences (3-night walks, full-day wine tours) can fill up 2-3 months out, especially during school holidays. Single-day activities like skydives and tasting tours usually have availability week-to-week, but checking a month ahead gives you real choice.

Sydney has decent trains and buses, but Hunter Valley and the South Coast are easier with a car or a booked tour that picks you up - most wine tours and coastal experiences include transport as part of the package. Check what's included before you book.

Yes, especially for wine regions where a guide knows which producers are worth your time and which are tourist traps, or for coastal wildlife tours where a local spots things you'd miss. For multi-day walks and water activities, a guide handles logistics so you can focus on the experience.

Waterproof layers, good walking shoes, and sun protection are non-negotiable. For overnight tours, ask what's provided (camp gear, meals, etc.) and what you need to bring - check before you go, as it varies by operator.

Beach skydives, wine tastings, and long instructor courses are adult-focused, but kayaking tours and coastal wildlife experiences often work for families with kids old enough to handle the physical demands. Ask the operator directly about age minimums and what kids can realistically manage.