Noisy hallways and loud guests have been an issue for me too while on Carnival. Carnival is like Walmart...a lot of different kinds of people go there. Some know how to dress and behave while others seemed to have crawled out from under rocks. Regardless, a cruise is supposed to be enjoyable for everyone. People should be mindful of that.
I only used them when we got back to the ship and they did work to cool me down but I would not wear them around. There are the ones we got amzn.to/465o6Ag