When there are thousands of passengers all sharing a confined space like a cruise ship, well it's important that people are polite. But there are rude things that passengers do every day... and some that they may not even realize they are doing.

That's why I went to Facebook to ask Cruzely followers -- and real cruise passengers -- what cruise etiquette tips they wished every cruise passenger knew. With dozens of comments and even more votes, here is what your other passengers think is rude that you should never do.

Want more cruise tips? Check out Cruzely.com or the channel!

-T