I think most people perceive they need fast film to shoot fireworks but you have to remember the fireworks are actually very intense light and what you really want to capture are the geometric patterns they create and the color.
The other thing about night time shots is being aware of moving objects. Sometimes you can create creative photos...using the item in motion to create a level of atmosphere while other time you are creating art rather than a typical photo. At the same time moving objects may also negatively impact what you desired to achieve in the photo.
Overall, the longer the shutter is open the less likely you are in obtaining sharp lines when items are moving either by natural reasons like wind, man made like motors, vibration sources, or just people crossing the path of your lenses target. Take lots of pictures, bracket and experiment. Some items can actually disappear or look like ghost depending on the amount of time your shutter is open...you can use this sometimes to your advantage. Bracketing night time rides like the tea cups will produce you a series of photos illustrating different levels of motion (blurry ghost image) providing a level of excitement and motion.
If you have not shot night time photos before on film, I would recommend shooting a roll or two before hand and make notes what you did with each. You will also get an idea how some of your cameras features work and behave in low light situations (i.e., auto focus, LIGHT METER, depth of field settings, etc. Be very concerned about the strongest light source since it will create burned out sections on your photograph if you do not measure the light variations within your composition. You may want to research how to measure light for night time sources on the Internet to learn the methods associated with film cameras. Following some of these tips will allow you to have an idea at Disney how you want to shoot a particular subject or situation with a level of confidence. You might even find it handy to keep a small flashlight with you to quickly find things and check camera settings.