With the addition of FOP & Navi, I'd say it's become a full day park now. Also open in evening, which is new.
Just about everything there is worth doing IMO. The only thing we'd skip:
We only do 1 show: so either LionKing or Nemo
Rafiki, not big fans
Dinosaur not for kiddos, under, say 10, maybe
Tough to be a Bug, not fans
We take midday break all days, even @AK. AK is a stop & smell the roses kind of a park, the trails & bird show & music events around are well worth it. Our littles (6 & 4) actually enjoyed hanging out with the ducks & other water birds behind Flame Tree, go figure.
It's a beautiful & fun park, worth it to spend a full day for us.
&Re Dinosaur: My very brave, no roller coaster too scary, Dgs 5yr old was tall enough & loved dinosaurs. He was terrified. Giant dinosaurs jump out at you from the dark with big teeth & roaring noises. I've heard of kiddos even 9 or so leaving that ride in tears. So we've skipped for the kiddos since then, tho we adults take turns riding while 1 adult goes with the kiddos on those kiddy rides in Dinosaur park.