There was a late night performance of the Main Street Electrical Parade on my last visit to the Magic Kingdom. The platform overlooking Main Street USA only had a few people so I set up the camera on a tripod to get ready to make a photo I had seen many other photographers do.
I put my camera in Manual mode and set the lens to its smallest aperture of f/22 for a large Depth of Field. This resulted in a shutter speed of 30 seconds at ISO 200. Focused on the scene and put the lens in manual focus mode. Focus would not change as long as I did not move the camera position. I screwed on a 3-stop Neutral Density filter and calculated the new shutter speed to be 90 seconds or 3 times 30 seconds. I put the camera in Bulb mode and used a timer on my smartphone with a cable release to open and close the shutter manually. Very low tech but it worked fine.
The 90 second exposure seemed a little dark to me so I did another one at 120 seconds which came out better.

Late night view of Town Square on Main Street USA.
Nikon D700/24-120VR, 120s, f/22, ISO 200, EV 0, 24mm focal length, 3-Stop ND Filter.
When the Main Street Electrical Parade starts, they turn off most of the lighting around the park. To compensate, I added even more time as the colorful floats passed by me and up Main Street USA. I found 180 seconds gave me a very interesting photo.

Long expsoure of the Main Street Electrical Parade.
Nikon D700/28-300VR, 180s, f/22, ISO 200, EV 0, 24mm focal length, 3-stop Neutral Density filter.
Like fireworks, very colorful moving subjects like the Main Street Electrical Parade floats create beautiful photos when photographed over a long period of time.
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