Don't worry -- everywhere on the new strip caters to the younger crowd. There will be crowds of 20-30-year-olds no matter where you go. The Mirage has a decent breakfast buffet for one of the best prices. I recommend splurging on a lunch/dinner buffet at the Bellagio (which is practically across the street) -- amazing. As far as hotels go, I'll stay only at the Bellagio. Clean and class. No other hotel/casino I have been to in that city compares. That being said, I haven't been in the new City Center. A friend of mine said she got bed bugs at the Venetian, fyi.