I know that Wolfgang's restaurants are very hit-or-miss, but I do find that the ones in Las Vegas are all quite reputable. This one located in the MGM just across from the KA Ticket office is excellent.
Delicious and hearty American fare at reasonable prices (for the generous portions). We got the burger, pork belly sandwich, and a side of mac and cheese - for two people, we were stuffed and ended up bringing half of our dinner home for late night! The sandwiches were $17 each (but both had huge sides of fries or Greek macaroni salad) and the Mac n Cheese was $12.
Service was top notch and continuously attentive. The ambiance is casual but still contemporary inside with an open-faced layout facing the casino outward. Great for dates, small groups, large groups, or just to get a bite to eat any time of the day. They are open daily until 5AM!