BD's Mongolian is a fun place for a group-- what's nice is you get exactly what you want; pick out your meat, pick out your vegetables and sauce, and they grill it on the giant block right in front of you. If you're hungry, get the all-you-can eat plate, and go back for seconds.
A salad bar comes with the meal, but why bother? The salad bar is unexception, and instead just pick veggies for your meal.
It's always busy, but usually you get seated immediately.