You don't need tickets to enter, so I'm not sure why that option is available. However, if you're driving around Rainbow Beach, you should definitely check out all the viewpoints. When we visited, it was just us and another family there. It's very easy to access, but since we wanted to spend more time on Rainbow Beach, we didn't stay long. The views are stunning, and if you're looking for a quiet spot to enjoy the sand and sea, I highly recommend it!