Favorite park. We ended up getting a really late start that day which ended up not being a problem as we got in nearly everything that we wanted while ending up in Pandora at night, which was really cool. So Animal Kingdom would be the last park you would want to leave early for IMO.
We made the mistake off trying to do both Universal parks in a day. We maybe got to 1/3 of the rides. The wait times dropped dramatically the last two hours of Universal being open but that was likely due to some late afternoon rain showers.
My vote would be to leave Magic Kingdom or Hollywood studios early for dinner. Neither of these parks have anything magical at night in terms of shows or fireworks due to covid.