To sum it up..Universal Osaka does things..shall we say, "differently" when it comes to Halloween.
They have Scare Experiences and Mazes (with some of the mazes in the day even); but in the daytime, they have fun family options with quite a few of the characters.
And interestingly, this year; Hollywood is allowing young kids to come to the parks in costume, and meet the specially festive versions of Meet and Greet characters. And that, Osaka also handles HHN not in the means of a hard ticket event.
Almost, like Mardi Gras in a strange way.