Mess night is all sorts of awesome. Basically at any point during the meal you can call out someone for a regulation, like their id isn't in their pocket, boots laced wrong, lack of manners all sorts of goofy things.
Anyone who is guilty of whatever was called out must pay a fine. Usually a dollar,(all proceeds go to charity) Or... Drink some grog.
It gets to the point where at any point in time there is one or two people trying to choke down the grog. It gets easier the drunker you get.
Yes but you have to realize mess night is a Formal dinner. That means dress uniforms and best behavior, which somehow makes it funnier. In fact the base commander usually gives permission for all underage marines to drink alcohol so that they can take part of the traditional toast to the fallen.