I never thought about it until so many here commented that FP+ inflexibility interfered with quickly changing plans due to things like weather. . . I thought "I'm going to a park anyway, what difference does it make where I get wet?" But I guess if I analyze it, DHS might be a good choice - it has lots of shows like Little Mermaid, Beauty and the Beast, Lion King, Muppets and pretty much all their rides are inside. And the park isn't too big, so dashing from one thing to the next isn't long treks in the rain.