Funny how few say Hollywood Studios. We are MK people also, with Epcot 2nd, HS third, and we like AK least. AK is at-best a half-day park for us. Not sure what the appeal it has for so many others, but I respect their opinions despite the fact that I don't share them!
1) MK due to its "classic" nature and it has our favorite rides (7DMT, Splash Mountain, Pirates, Haunted Mansion). Great atmosphere almost everywhere there. Love the castle and the fireworks too.
2) Epcot due to world showcase, festivals, strolling around the lake, a more "adultish" atmosphere, Soarin', and of course, the wonderful Dame Judi Dench and those Phoenicians.
3) HS has really upped their game over the past 10 years or so with Toy Story Land, Galaxy's Edge, and MMRR, but it's still a land of hot concrete and I very much dislike the "classic Hollywood" theme and colors. They should abandon the Hollywood Studios name and theming altogether since there's really not much there pertaining to that anymore, and completely re-configure to better embrace what the rest of the park has become.
4) AK is nice, but there's just not much there to keep us there and entertain us. It really only has FoP going for it. Yeah I okay I'll go to river journey, Kali rapids, safaris, and everest while I'm there, but the rest we skip or go to only because it's convenient. I cannot stand Dinosaur. Bugs life is meh. Conservation station is only worth the nice train ride to get there, though even that is frustrating because they don't let you see outside the train cars very well.