Do not order it. I am serious. Do not ask me why, just do as I say. Order a bratwurst or a weisswurst instead. Leberkaese on a pretzel is good, too.
Schnitzels are pork cutlets that are usually breaded and then deep fried.
The type of schnitzel usually indicates whether a sauce is put on it or how it's cooked. For example, a Weinerschnitzel is a breaded and fried pork cutlet, no gravy and the potatoes are sometimes fries. A Jaegerschnitzel is a schnitzel with brown gravy and mushrooms. If you get tired of sausages AND schnitzels you can go to a pizza place, but the hot tip here is eat it with a knife and fork. You are a Stupid American if you eat it with your hands.