Should I instruct in etiquette at Summer Camp?

[MikeWaters]

We were eating dinner last night, and I noticed that one of our young scouts has pretty poor table manners.

Eating roast beef with gravy with his hands, licking his fingers, mopping up various items with other foods.

He is hispanic and poor. I doubt that he can ramp up to proper American manners. (in other words, I don't think he's letting loose just for summer camp).

So, should I just leave him be (he's young and it's cultural) or should I give him some friendly pointers?

I don't want to make him feel bad, but maybe no one else will bother to teach him.