Use wooden chopsticks for noodles
Hong is quick to point out that there aren't any hard-and-fast rules about whether to use metal or wooden chopsticks when you eat KBBQ. But he does say that wooden chopsticks are typically used for hot or cold noodles, since they grip 'em better. So if you only see metal chopsticks on the table, ask for wooden ones. If the restaurant doesn't have them (which is unlikely!), feel free to tell the server to get a grip, and then wink profusely.
Make a "stand" for your chopsticks
There are a few obvious places to set your chopsticks when you're done using them -- on the side of your rice bowl or directly on the table. But if you want to look like you know what you're doing, Hong says you'll see a lot of Koreans fashion a makeshift chopstick stand from the paper wrapping they come in by folding it up. Or you can just be lazy and put them on the rice bowl. The choice is yours!
Enjoy the banchan (and take advantage of the free refills)
"Banchan are side dishes that differ from restaurant to restaurant," Hong says. The servers will bring them out before the main course, but that doesn't mean they're an appetizer. They're meant to be sampled throughout the meal, as the dishes typically have acid and vinegar. You'll appreciate that when the acid cuts through all the rich meats soon to be on your plate.