I ask for two reasons. 1- When I'm doing paid asignment work with ANY type or size of camera, I use a support wherever physically possible, even in bright sunny situations. This makes a huge difference in the quality of the shots I can get. 2- You have a night shoot coming next week, the darker it gets the more support (and artificial light) is needed.
As to your night shots posing an issue for post process; only if you scrimp on exposure.