You might be. There are cameras everywhere. Aside from average security brigades, they even have special tasks forces with only a handful of things to focus on.
There are at least two special forces at the park, one dedicated to catching people using drugs at the park, and another dedicated to catching people who flash or flip off the cameras during the photo parts of the rides. If you’ve ever gotten a message saying your photo isn’t available when you got off the ride, there’s a good chance someone either flashed some breast or flipped the bird to the camera.
It’s not quite as exciting as it sounds though. Despite rumors, the area under the park isn’t a massive underground city. There are many underground basements though, where cast can relax, change in and out of costumes and eat lunch in peace. Think of it like a few really big break rooms.
Disney World on the other hand, was built late enough that they have a full “city” underground.
Opening day was such a disaster that pretty much every press organization that attended the celebration had predicted the park’s failure within one year. It opened on a day that was 101 degrees and the street asphalt still wasn’t dry, leading to it sticking to shoes. By the end of the first day, all but 2 of the 48 Autopia cars were crashed and about half the rides were broken. Despite all that, park visitors loved it and attendance continued to grows day by day.