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.
We do multiple trips. A few long weekends, one one week, and one two week. The two week one we have to take it easy. I also backpack and ski and while Disney is obviously real cushy when you’re getting up at 6am every day and doing 25k steps it’s surprisingly exhausting.
Of course in the current political situation I would never return to Florida, and Disneyland is much smaller.