You say you will only cancel if it’s not safe to do so because of weather conditions. So Clover Moore they can be cancelled?????
The power is in your hands. 
Have some compassion for those who it will frighten and make sick! Poof more smoke in the air do you not understand it’s not about the money now. If people want to go to Sydney Harbour to celebrate the new year fine but don’t add fuel to the fire! Put up a big sign that says we care about our fellow Australians! 
It’s all about AUSTRALIA showing respect for firefighter and victims of these catastrophic fires burning around the country. Be a world leader, have the GUTS to say NO to fireworks. Maybe others may follow.