Vegas is cool,i've been there a few times but i just turned 21 this summer so i didn't get to gamble or anything and i was 20 the last time i went

but there's alot of cool stuff to see,you MUST go to the Stratosphere,especially at night,the view of Las Vegas at night up there will be one u will never forget......plus u could try those rides that shoot u off the edge haha,check out the other hotels,each one is different so there's some really cool stuff to see in there, have a good time while you're there man and try and catch a Cirque Du Soleil show,especially Ka,hopefully it's still playing,really cool stuff
edit.....just realized that the thread says you're going tommorow which would be today

,hopefully you'll have seen the things i recommended anyways hehheh