I would look into seeing Danny Gans at the Mirage. One of the best shows you will ever see.
2850 East Tropicana
Las Vegas, NV 89121
Great Italian restaurant. It almost feels like you are back in time in old Las Vegas. The food is good at a good price and if you call them they will send you a limo and pick you up and drive you back for free. They also have live entertainment while you eat.
Chin Chin is a good Chinese restaurant in the New York New York casino. Good food at a good price. Just don't order too much because portions are big. The fried rice is great.
The Rio buffet and The Rio seafood buffet are two great buffets. They have a huge variety of different food including many things they cook for you in front of you. They cook steaks and stir fry. I would also stick around for the free show in the sky.
I go twice a year so I can keep listing things but these are a few that are off the top of my head. Any other questions feel free to ask.