To be perfectly honest, unless the game is being run by someone who has a lot of night operation experience, my advice is to stay away from the night part of the game. And this comes from a lot of experience. Night ops can be incredibly fun, or they can be absolutely horrible and I have seen both. I went to an overnighter in KC some years back, and while it was fun for a while it kinda got crazy in a hurry. A poorly setup ambush turned into a spray and pray hosefight and even after turning on my red strobe after being hit, I still got repeatedly lit up at close range multiple times. That hurt, A LOT. Not learning my lesson, I went to another one sometime later and had to stay up and moving all night because of near freezing temps that were not quite like the weatherman had predicted. This IS March and it may get pretty chilly at night, so unless you are bringing the correct gear for that type of situation, my solution is to just avoid it. And it's worked out pretty well so far.
Supercell is absolutely 100% right on this one. If you have a shadow of a doubt about it, don't do it. In fact, I'm planning on leaving the op for the night as soon as we start losing light. I'm behind you 100% on this, so don't feel guilty about the team or anything like that, it's just a game. Now if you were in the actual military then not wanting to do night ops could be a problem (lol), but this is only airsoft. It's just for fun, and that is what airsoft should be. Forget all this "hardcore milsim" and just enjoy the day parts of the game. That is what I plan to do, besides you can always come back refreshed and ready to fight the next day.