I enjoy Disney parks (though I would not call myself a "Disney adult") and I found the best way, if you can afford a longer stay, is to spend no more than half a day in the park, and visit each park twice, or three times for your favorites. (Personally, I was done with "Hollywood Studios" after just half a day.)

Of course in the current political situation I would never return to Florida, and Disneyland is much smaller.