Traveling australia right now. If your from the states I wouldn't really don't bother coming. Everyone here is just trys to act American with an accent. There is no difference in culture which kinda sucks but they do have some sick citiies like Melbourne as well as some really good beaches.
Yeah man they're called croc tours. You pay about 60 bucks and they take you down a river and dangle the meat from outside the boat. Your guaranteed to see at least 4 meter crocs it's a big tourist attraction down here.
^Yes, you just have to know where to find them. I don't know if there are any around the Sydney area but there defenetly are an hour or 2's drive north.