To add to this speaking about my 2017 trip I mentioned in a Saturday to Saturday schedule MK had
MNSSHP party nights back then 3 nights but back then it closed at 7pm, there were nights that were not party nights that closed between 9-11pm regular park hours. It still was an effort to try and maximize park time with the earlier closing times.
Nowadays MNSSHP starts earlier than it did back then, closes the park at 6pm, and regular park hours are not that late anymore.
To be fair with a mention towards
HHN over at Universal they do close down the Studios at like 5pm I believe but they just don't have nearly the same number of nights that are affected throughout the year at WDW does. I also forgot about
Jollywood Nights over at DHS. Fall/Halloween season is rough already but if you're going in that Christmas time like another poster had talked about it can get really dicey there.