We are going to Sydney for Christmas and New Year. We're staying in an airbnb apartment in Manley for the first 5 days then with relatives in Dee Why then heading camping 3hrs South (Bawley Point) for New Year. It will be me and two DS (13&8). We want to do all the touristy things the first few days, opera house, bridge climb, aquarium etc and will be eating out at least once a day for the first 5 days. We will also be taking the ferry etc. My question is how much should I budget per day? We will also be contributing to food and drink while with relatives and camping. I was thinking £150 per day (sterling). Accommodation is paid for. Am I living in cuckoo land on £150 per day or should I get saving??