Hop-on hop-off bus with 2 routes: Red (city, 23 stops, 30-45 min) 9am-4pm; Blue (Bondi, 11 stops, 1 hour) 9:30am-3:15pm. Audio guide 8 languages. 24/48h options; some include cruise and ferry. Kids under 5 free; under 16 with adult. Wheelchair accessible.