I've been to the Disneyland in LA, Paris and Japan. Even though
there is quite a gap between visits, I've got to say that Japan is
between LA and Paris in terms of fun. On a cold weekday, Japan is
quite fun if you know what to queue and what not to queue. Ride all
the rollercoasters, Disney's rollercoasters are designed to be
family fun, and should be relatively pleasant if you aren't
medically handicapped. Japan's coasters are generally fun and safe,
and are thrilling enough for younger adults.
Japan also like said above, is much more friendlier due to their
culture. The people who work there are generally kinder folks.
EDIT: Also, the staff are mostly trained to speak english. They
do help even if their responses are a bit broken. But good luck
getting to the actual Disneyland if you don't speak Japanese.
LA is boring and warm. I can't think of anything great about
it.
Paris is awesome, just because of their Tomorrowland's Space
Mountain Mission 2, which doesn't chain lift the rollercoaster up,
but launches the train up before sending passengers into the
mountain. The selection there is cattered more towards thrill rides
however.
