For me its theme and H2O parks (mostly combined as a theme/H2O park ex-PPKI, WDW). Theme- Its the basis of the thrill! Without a theme its just some ride sitting at some park that has some paint and has some name that just sounds off. Also with a theme it makes me think of what the makers intended for me to feel on a ride/coaster, and makes me feel im a part of the "story" Ex- Expedition Everist. H2O- Its slides and pools, what more can you ask for? My favorite thing at any park are the slides, and the pools. Also some waterparks make me feel like im in the tropical regions of the world, making me feel at home!