We go to vegas at least once, if not twice a year…some good things are:
The Shark Reef at Mandalay Bay
The Roller coaster at NY, NY and the “street scene” inside the casino
The Lions at MGM
The water show at the Bellagio
The pirate ship at Treasure Island
The gondola ride at Venetian
The Volcano at the Mirage
You can take a helicopter ride to the Grand Canyon and have a champagne brunch on the canyon floor (never been but looks cool)
It’s awesome just to walk all over and see the different things that Vegas has to offer.
The RIO (off the strip) has the largest (and very good) buffet in Vegas. If you go to the Rio make sure to hit up the VooDoo Lounge at the tippy top of the casino, great view from up there! THAT would be the best place to see the fireworks IMO>…
Dinner at the top of the Stratosphere–pricey (great food tho) but the top revolves around so you get a 360º view from up there.
Blue Man group (they moved to the Venetian I think)
“O” at the Bellagio
La Reve at the Wynn
If you go to the Wynn make sure to check out the SW STeakhouse, dinner is VERY $$$$ but famous ppl go there all the time (we’ve seen many stars there) and the show on the water is awesome after dark. Also have a Lamborghini dealership there that you can tour.
Good luck and pm me if you have any questions!