To answer your question....yes.
Any restaurant that takes the dining plan, you can order anything off the menu.
Now there is guidelines such as: You can only use a CS credit at a CS restaurant. Same with TS.
A couple TS restaurants have what is called a "prefix" item. This is an appetizer, entree/side, dessert and drink. You can use a TS credit for this as well, the only thing is you can't substitute anything (like your side item). You have to take it like it comes.
You also order off the same menu everyone else does. Meaning those paying cash get the same choices as you do.
There isn't a "shorter" menu for those on a dining plan.
As far as price...yes you can order the most expensive thing on the menu or the cheapest. If they accept the
DDP it is allowed.
Example: Cosmic Ray's has a rib/chicken combo meal with half a chicken, half slab of ribs, a veggie, mashed potatoes. You can get that.
It also comes with dessert and your drink.
They also offer a burger and fries...the choice is yours. Even though the combo meal is close to $15 and the burger and fries is $9ish.
Hope that clears it up for you.