there's so much to do in Vegas. i used to go alot and now make it out like every other year. too bad u dont' gamble b/c playing craps and gambling is FUN!
hit up a show like KA @ MGM or Britney @ Axis/Planet Hollwood. (everyone loves her right?) not sure who does magic there these days besides Penn & Teller, but even some of the corny shows at Treasure Island and Excalibur are fun. the Bodies exhibit at the Luxor is creepy but really cool. i like Club XS. gotta go to Texas De Brazil if u like meat and the Bellagio buffet is amazing fine dining even if it's a buffet lol. shop/check out the mall at Cesar's Palace. Pete Rose is there like almost everyday (that or the mall at Mandalay Bay - oh check out the shark tank there) . if u wanna escape the city and do a lil sightseeing- Red Rock Canyon, Grand Canyon and Hoover Dam is popular.
have fun, party crazy. take a cab, the drivers know everything really well and what's hot.