Hi, We arrive in Sydney around 11am 20/2, departing the Monday morning, staying in Parramatta. There are 4 of us (2 adults, 2 teens), all with different ideas on what to do. So far the "to do" list is the Manly Sealife Sanctuary, The Tower, Maritime Museum, Powerhouse Museum & the Observatory, but we would like to pack in as much sightseeing as possible in that short time. Saturday has been planned already, leaving us only 2.5 full days. Other things that we'd like to do are the chinese garden, Hyde Park Barracks, the Justice & Police Museum & Bondi. Obviously we have to see the Opera House & Bridge as well! I'm getting exhausted just thinking about getting round all this, can someone please give some advice on timing of all this? We will be buying multi tickets to get around with.