"White Noise" machine/fan?

[jamesez]

Not recommended

You didn't bold the part where I said if the weather is cooperating. We usually cruise in late February and the nightly temps are such that we can turn off the AC (set it in the middle) and keep the door open an inch.

ETA: the RCI ship we were just on would disable the AC if the door was open.

 

[PrincessShmoo]

You didn't bold the part where I said if the weather is cooperating. We usually cruise in late February and the nightly temps are such that we can turn off the AC (set it in the middle) and keep the door open an inch.

You can't turn off the air conditioning entirely. If you open the door, it pulls the cooler air inside out, causing a draft through open doors, as well as under the doors into the passageway and other rooms.

I copied this from a post a while ago (made by someone who knows a lot more about how ships work than I do):
All modern cruise ships are designed with many fire safety features to save your life in case there is a fire onboard.

One of those features is air pressure.

Cruise ship cabins are designed to have a slightly higher air pressure inside the cabin than outside the cabin. If there is a fire outside your cabin, the over-pressure inside will cause smoke and flames to move away from your cabin rather than move into it.

This system works great until you or your neighbors open the balcony door.

With the balcony door open, the air pressure drops in your cabin. The A/C system is designed to compensate for the lower air pressure by pulling air pressure from your neighbors' cabins into yours. This also pulls the cool air from their cabins into yours. And if your neighbors are smokers, it also pulls their smoke into your cabin.

The problem is that with your balcony door open, the A/C system never is able to compensate for the lower pressure. It keeps pulling more and more air from your neighbors, trying to compensate for your cabin. That's when all your neighbors start calling the front desk to complain that their A/C is not working properly.

A few cruise lines tried to counteract this problem by installing magnetic switches on the balcony doors. These magnetic switches automatically turned off ventilation to the cabins that left their doors open, making it safer and more comfortable for those smart enough to read and follow the signs on the door asking them to keep it closed.

Then some genius found a way to circumvent the system by placing a small magnet near the magnetic switch on the door, making his neighbors uncomfortable and less safe, but ensuring he could leave his balcony door open and have A/C at the same time.

The cruise lines gave up and removed the magnetic switches. Now you can leave your door open and ruin your neighbors' cruise without the help of the magnet.

 

[C6PT7]

You didn't bold the part where I said if the weather is cooperating. We usually cruise in late February and the nightly temps are such that we can turn off the AC (set it in the middle) and keep the door open an inch.

ETA: the RCI ship we were just on would disable the AC if the door was open.

Cruise ships cabins are not sealed units.
@PrincessShmoo is correct and you are wrong about you assumptions of not affecting others.

 

[Quellman]

The apps for electronic devices aren't too shabby, and we have used them in a pinch. But we usually pack the one we use at home, which is small. Ours is this one [link], but there are many similar ones. I don't like running my phone speakers for hours on end.

 

[OKW Lover]

I can't recommend a white noise effect, but there are more than two outlets in the rooms.

2 on the desk, one on each side of the bed, and one behind the TV at least. Some rooms have more.

On the Dream a couple of months ago our staterooms (9540 & 9542) did not have an outlet behind the TV set. I was very surprised at that.