Whispering Cliffs/Scenario Guide
It's important to think twice before placing a ride somewhere ; usable flat land is very limited on this map. But as long as there's a wide variation of gentle/thrill rides, and this map shouldn't be too hard. The park also consists of parts of sea which covers the whole shoreline for 4 or 5 tiles. Raising this land will give some extra building space, but at the expense of draining the park's finances down to the bottom of the sea. However, they will serve perfectly for tall rollercoasters such as the Corkscrew Rollercoaster.
The stations for roller coasters and other tracked rides should be built on the edge of the cliff, so they don't fill up important space. Of course, this map will require custom designs. The tip would be to build them underground : the cliff walls are perfect for that, and will not only save the player some valuable space, but also increase the rides' excitement ratings and keep on drawing guests when it is raining. Players also can build a path down to the water and build there without raising the land, though it should not be necessary at all. This still can be done for filling the map after this scenario's complete.
Here, the worst is the terrain, but the scenario's objective isn't hard at all to get : the main difficulty here is to start a proper layout.