If you're at the HRH, you're probably going to need something to soak up all the booze in your tummy at some point. Most of the time it's too shameful to enter a regular eatery in that state... Enter Mr Lucky's. They'll get you some chicken soup, eggs and/or a greasy sammy that will make you feel like at least $1.25 and will prevent you from ralphing before you get home. Prices are reasonable (for a casino) and there are a few TV's around the bar, making the fact that you've lost all your friends and are rolling solo a bit more tolerable. Don't be a dummy and order the something like the bahn-mi, stick with classic griddled diner food and you're golden.
Add 2 stars if it's post 2am and/or you've lost all of your money gambling.