system
Given the following post, respond as if you're commenting on Reddit:
human
[Attack on Titan]Why doesn't the Survey Corps sally at night?

It's said that Titans become lethargic in the absence of sunlight.  In addition, since blinding a Titan seems to disable it, they seem to rely on sight to hunt.  So wouldn't it be a lot safer if they made their sallys at night?
gpt
The dangers outweigh the benefits. Night time grants concealment and cover but to both sides. True, titans are bigger and easier to spot in such conditions than humans but it only takes one of them noticing to get the attention of all the others in the area. So the Corps would have to go extra slow to avoid attracting attention, and speed is key to survival out there.

Outside the Walls, the only real defence that humans have against titans is mobility. We can't really fight them head on, we can't outrun them on foot. Even hiding isn't much of an option since we still need food and water while they don't need either. So we need to keep moving, either on horseback or with 3D Maneuver Gear.

You know how fast you move in 3DMG? Really, really fast. Now imagine having to do that, having to make those split second turns and shots, all in the dark. One wrong move and, if you're lucky, you'll be instantly killed by faceplanting into a building or tree. If you're not, then you'll probably also get a bunch of your team mates killed trying to save you.

Riding on horseback has similar issues but with the added problem of having a living animal between you and what you want to do/where you want to go. The horse just has to make one misstep and down it goes, and if you're in an open area then you're totally screwed. And again, imagine doing that at night when the horse can't see any better than you can.