If you have a tripod and live in a city then night photography is something you will enjoy, how could you not. Add in some water and your opportunities for extravagant imagery multiplies. Exposure is an issue because your camera may want to even out the light and dark areas so you end up with pictures that are just too light with burnt out highlights so be prepared to play with the exposure compensation control. Focusing can also be a problem as the camera’s auto focus struggles in situations where there is not much light, as all your main subjects will be beyond infinity you can put the camera into manual focus and set it to infinity (the sideways 8 symbol). Long exposures or high ISO settings are likely to introduce more noise than you would want but put up with it and enjoy the results anyway.
This post on Lightstalking will give you lots of inspiration