The pushing food around your plate is a picky eater classic move...however, I know the relationship between that and anorexia...I'm so sorry you had to deal with it.
The etiquette class are must. Some of these TCC have just rolled in on a turnip truck this morning. Feisty Taylor-who-hated-her-haircut a few seasons ago comes to mind...KaShara also mentioned she'd never been exposed to formally set tables. Someone else mentioned the food was weird, she wanted chicken, rice & green beans...there's a lot that goes into the higher-society-than-they-are-used-to dining. And really, at this level, if you don't like the meal, shut up and eat some of each thing, you'll live (unless of course there is the possibility of anaphylaxis from allergy)...but you'll notice they don't serve common allergens like nuts and you'd be expected to say "thank you, no, I'm allergic to shellfish".