Just one more suggestion, given your last post...
The Mandalay spa is fantastic. Divert your alcohol budget there! Also, another fun evening is sitting out on the strip at Mon Ami Gabi (at the Paris). The patio is heated, the food is great, and you can watch the Bellagio fountains for a couple of hours! You'll want to make a reservation.
Also, the Blue Man Group is a lot of fun, but my friend recommends Mamma Mia.