Sasquatch! festival - any tips?

I’m about to buy tickets for Sasquatch! this year, and it will be my first music festival of any sort attended. This is quite sad considering I’m in my mid-30s. Since I’m such a late starter, is there anything I should be aware of?

I’m planning on camping on site - does anyone know how far the camping is from the amphitheatre? How are the facilities for the non-premium campers? Anything non-obvious I should make sure and bring?

Any other general festival-going tips? I.e. how much am I looking at spending on food and beer?