The mountain becomes quite quiet at night, allowing you to hear all kinds of noises much better. Furthermore, you are likely unfamiliar with a variety of noises that are not similar to those heard at home. This might make sleeping difficult, especially if you are a light sleeper. Travelers who keep you up by snoring if they go to bed early or exchanging stories if they remain up late might make a lot of noise. Earplugs are especially useful if you’re sharing dormitories on the Marangu route because of the snoring. Between the tents, unusual and loud sounds might be made not only by humans but also by the wind.
Keep in mind that porters and guides, among other things, wake up earlier than you do to make your meal. When climbing Kilimanjaro, it is suggested that you pack earplugs to ensure that you get as much sleep as possible throughout the night.