Great advice so far. Thank You for all the help. So basically it isn't that our FujiFilm Finepix z20 fd digital camera is a bad camera, it is just that no P & S digital cameras take very good pictures at night or on dark rides.
Basically, correct. Though one caveat to that was one brought up by another poster - that 'night shots' can actually come out great even with your camera if you use the right technique. It's the 'dark ride' photos that P&S cameras can't do. Basically, any nighttime or dark place where you are trying to take a photo while moving, or of a moving subject, is not possible with the P&S without very grainy, blurred results. A camera requires a fast shutter speed to photograph something moving...but requires a slow shutter speed to capture light in a dark environment. Therein lies the problem - the shutter can't be both, so it has to choose fast or slow. If the shutter is fast, the scene will be far too dark or very noisy and grainy from cranking up the sensitivity or ISO. If the shutter is slow, then anything in motion is going to be a blur.
However, night shots taken of landscapes, buildings, or scenery don't have to worry as much about a moving subject...you can set the shutter speed very slow, and let the camera pull in as much light as possible to expose the scene. In order to take nice night shots, you'd want to set your camera's ISO setting to a lower number, like 80, 100, or 200 at the most. Then, either use the 'night scene' mode or Auto mode (you don't have manual controls with your camera), just put the camera on a tripod or lay it down on a nice, flat surface like a wall or garbage can. Set the self timer to take the photo, then line up the shot, press the shutter, and then don't touch the camera or the base it's sitting on. When the timer is up, it will take the photo - it may take several seconds, so don't touch the camera until the LCD returns to normal shooting mode. Your current Fuji is capable of taking nice night shots using this method.
I heard from a couple people that kodak and cannon both have models that work well in the dark is that true?
Actually, not particularly. In the compact P&S arena, those two manufacturers are not really class leaders in low light situations. They aren't any worse than any other P&S, but not better either. Canon does have a model or two that are considered 'advanced' P&S models - such as the G10 - which have larger sensors and manual controls. But this model is not only more expensive, but much larger than the typical pocket camera.
would
walmart carry the Panasonic LX3, the Sony WX1, or the low light sensitive Nikons?
I would think the Sony & Nikon models would be at a Walmart at some point - they are standard mid-range P&S models, compact and pocketable, and reasonably priced, so they will likely be commonly available at many locations. I think you'd have the best chance with the Fuji F200EXR & Sony WX1 at this point of the new compact pocketable models with slightly better low light capability...Nikon's compact range is not especially capable in that regard, any more than any other model.
The panasonic LX3 I'm not sure would be available at Walmart. This is a more expensive and much higher-end camera - though compact, it is definitely in another class from the standard compact P&S models, with a larger sensor, manual controls, and very nice lens. It can be found at plenty of online retailers, and likely some dedicated camera stores or high end electronic big-box stores...not sure about Walmart though.