I visited to Queensland. The roller coaster is like a small car. And the track doesn’t make the roller coaster go upside down. It needs to be developed. When hearing about roller coaster , I built castles in the air about it. But that little car destroyed my imagination . The next problem is swimming pool. It separates men and women. I didn’t like that. If both male and female join in the pool the enjoyment would be more. So try to enhance this idea