If you are entering Katherine's Nitmiluk National Park as a visitor of the Northern Territory, then yes, you will need to acquire a Parks Pass first. You can purchase your Parks Pass online through the NT government website.

Katherine is best visited during the dry season, from May to September. The weather is perfect for outdoor activities, with warm days and cooler nights. Plus, you'll avoid the wet season's heavy rains and potential flooding.

Katherine is located about 320km southeast of Darwin. You can get there from Darwin by car, bus, or train. If you're looking for something a little more unique, the Ghan train journey offers a memorable travel experience through the outback.

If you're visiting Nitmiluk National Park on a day tour, you'll want to come prepared with the following items:

• A water bottle to stay hydrated in the Aussie heat
• A camera to take photos of the stunning scenery
• Comfortable clothes you can easily walk around in
• Comfortable, enclosed shoes that properly protect your feet
• A broad-brimmed hat, sunglasses, and sunscreen to protect yourself from the sun
• Insect repellent to ward off the resident mosquitoes