Take warm clothing, and more trial and error! Sounds like you’ve got a headstart from last night’s fun. Start with what you had then, and go from there. Exposure is just a matter of doubling or halving till you get close, so you should get some decent results within a few shots.
You’ll get sharper shots of landscape (except for the moveable bits e.g. trees/branches) with smaller apertures, but exposures will be longer, so longer trails from stars and car head/tail lights, more blur from clouds. All about finding the best compromise, as per all things photographic. ISO is a similar story, go as low as you can for the exposure you’ve got time for, less grain, but longer exposures.
Most of my successes/failures have been on the composition, I don’t have a long lens, so mine have been moonlit landscapes rather than closeups of the moon/silhouetted skylines. Those are bit more critical for timing, you might only get one or two goes at it.