Don't let the camera use its normal automatic exposure.You will likely end up with the lights or fireworks washed out and loss of color.
The problem is, the camera in normal auto mode tries to make a night scene look like day, and opens up (its aperture) all the way. The Christmas lights may produce enough average illumination within the frame to force the camera to stop down a little but it will still overexpose the lights themselves. In addition the overall scene will appear darker or brighter depending on howmuch Christmas lights are in the scene.
A "night exposure" mode will help. Sometimes you will get acceptable results without a night mode by minusing the exposure compensaiton.
"You couldn't hit the broad side of a barn."
One good starting point for a manually adjustable camera is to bring the camera up to say, within a foot of the subject. Set the exposure there, then back off and frame the entire shot. You may still need to bracket the exposure. For example, for the Osborne lights you might set the exposure by getting up close pointing at the side of one building, including some strands of Christmas lights, and then back off and take a shot. Then set the exposure differently by getting up close to a differently textured side of a different building, then back off and take the same scene (which, say, included both buildings).