This day we traveled to the Mount Remarkable National Park. We were badly impressed when came to the park and weren't able make a payment by cash to the envelope (it's a usual practice in Australian parks). There were 2 options to pay: 1. online 2. in few shops but 15 km away from the park. Of course, we chose online payment... but... my mobile and my cousin's were out of service. Husband's mobile's worked but connection was so bad. Finally we made a payment and visited the park. Other visitors from Queensland weren't so lucky. They came back and were going to make a call to the park office and complain about this situation.