Are you sUAS rated? If not, then your flights are all recreational and you should go out and enjoy your night flying.

Even if you have an sUAS rating, you can still fly as a hobbyist (just don't monetize your video!) Have fun!
So, to answer your original question, for stills, I would bracket your exposures (using the AEB-5 setting). This will increase your chances of a properly exposed night shot. For both video and stills, display the histogram and ensure that you don't have any blown-out hightlights (make sure nothing touches the right side of the histogram).