This is a Buca Di Beppo, part of the chain, but with the caveats of being open for breakfast and buffets all day. I believe the breakfast buffet is $13 ($12 for total rewards members, anything over 10 bucks is a dollar less), the lunch buffet might be $14 or $15, and the dinner buffet is $20. The hours listed on Yelp are not the hours written by the door. The door claims 7am-10pm Sun-Thu and 7am-11pm Fri-Sat, although the restaurant is indeed closed 3pm-5pm.
I went for breakfast. Their main draw is the breakfast buffet of course, every menu item is more expensive. I didn't get the buffet but I looked at it, the former Sidewalk Cafe that was in this location had a better buffet. All I saw was cereal, oatmeal, scrambled eggs, sausage links, hash browns, and pastries. I didn't even see bacon, perhaps I missed it.
I ordered off the menu, had the Las Vegas Scramble which contained turkey sausage, veggies, cheese; it was pretty good but it was an omelet and not a scramble. My friend ordered, among other things, cranberry juice, which was probably a 6oz glass for $4.
Service was somewhat sparse, place was clearly understaffed.
Gets quite busy for breakfast, be prepared to wait in line for 10-15 minutes if you come after 9am when Vegas is busy. They are not affiliated with Total Rewards, so having a high level players card doesn't allow one to cut in line.
Probably the lunch and dinner buffets are considerably better.