Yes!
Strawberry has compostable toilets across the site and campground. There are also showers available within the campgrounds for a fee (5x berries aka $5 for 3 minutes) - purchase Shower tokens from Chill Bills (ice) locations. BYO towel and toiletries. Locations can be found on the site map which is released in the week leading into the festival.
You can also book into the Bush Spa for access to showers, plunge pools and an array of wellness treatments and experiences.