Definitely do the well i was there on the weekend so champagne brunch at the Mirage. Awesome food and what not more expensive than regular brunch but it was so worth it to sit and eat and have champagne and had my first taste at gelato ice cream.
Entertainment not sure...there are casinos, shops, rides (top of Stratosphere), Speed the Ride, Manhattan Express, Circus Circus that kind of thing.
Ride the monorail....
Oh not to miss the Efiel tower do it at night scary...
And Shark Reef at Mandalay Bay. so worth it and take your time and stay in the room with the touch reef. Awesome. I couldn't get enough of touching the baby sharks.
Even took the behind the scenes tour.
I'm going back in April for Bon Jovi and plan to do Stratosphere at night and then just shop and drink and eat the whole weekend lmao...