from my observations over the years I've always thought in my head that theme park fans come in 3 groupings:-
1, Roller Coaster Fan:-.... exactly that, someone who loves roller coasters in all there forms, ages and sizes..... classic credit whores
2, Thrill Seekers:- Similar to above but is in it for the adrenaline buzz, prefers more intense roller coasters, but also loves intense flat rides, tower rides etc - anything for the rush. May be bored on 'family' coasters and rides or think of them as lame.
3 'Theme' park fans:- loves the art side of theme parks, special effects, dark