Different people have different preferences. Off the bat -- I think that most casual park goers are OK with what they want to ride once, and calling it a day on rides. They wouldn't even ride the rides 5-10 times each if the park was a ghost town. And, they can enjoy looking at the sights, going out to eat (can probably find a reservation somewhere, even it has to be at the resorts, and EPCOT you can usually get something same day), seeing the fireworks, etc.Sadly if you are new and treated it like any other amusement park you are going to be frustrated and confused. You have to do research and planning well ahead nowadays. Most parks you show up and you are on an even playing field. So you’d probably be awed by the castle, the ball, the theming. Get a feeling of nostalgia from seeing things you saw in books your whole life. Then totally confused and irritated that you should have had reservations and fast passes months ago and studied which rides you should do first. Because six flag doesn’t do that lol
Its only select groups of people (like me and probably a lot of people on this board) who would even take advantage of getting 5-10 rides in on their choice of rides if given the chance.
So I think that's how casual park goers can justify going at busy times of the year sans a plan.