The draw to the GLC is its convenient location, its variety of offerings and its reasonable price point (for the Vegas strip).
I ate here twice while staying at Palazzo in early March -- breakfast and a late lunch. There are a few zones to this huge restaurant, a "terrace" that is on the casino floor, a bar area, a main dining room with buffet. Mostly booths for seating options.
For breakfast I wanted something light...so naturally I ordered biscuits and gravy. The portion was massive with two biscuits, two eggs, breakfast potatoes and lots of sausage gravy. The biscuits were a little dry, but the gravy was good. Fresh squeezed OJ and decent coffee. Mom got a traditional egg/bacon breakfast that she thought was decent. Similarly huge portion.
Lunch was equally decent. We both had sandwiches. I had a tasty Reuben. With some crispy yummy fries. Don't know if it was that I really needed to eat but that combo hit the spot. Again, massive portion sizes.
It's not a restaurant that I'd seek out, but it's definitely a more quality option than most of the strip's standard buffet or cafe offerings.