Late night, in a casino and you're hungry, what do you do? You go to the food court and hope something is edible. Where other places ran about 2x normal price, Sbarro's seemed to be only 1.5 the price, so it was a "deal".
The husbeast and I ended up getting a calzone like thing that was pretty tasty, with a side of sauce to dip it in, the $2.50 water was better priced than most things on the strip - or even in the hotel at large. If the dudebro who was in line before me hadn't spilled beer on me, it might have been an overall good experience.