I will be arriving in Sydney next March, 14th, and would like to know about any other interesting cities to visit in my “7 day trip to Australia”. Could anyone help me?

I am embarking on a 5 day backpacking trip and I recently got my cartilage pierced of my ear…
The piercing is only a week old and I am scared of an infection. Any suggestions?

I usually go with oatmeal, ramen, and trail mix as my staples, but I am doing a 7 day backpacking trip with my friends, and I can’t live off of that stuff for that long.

What are some of your favorite (lightweight) backpacking foods?