Went to LV on honeymoon for 10 days. Fantastic place, several days were spent just walking around visiting the hotels and the various things they offer (1 place had baby tigers when I was there), went to the gun shop, went to see 'O', went on a Heli tour of the canyon (may not be the real canyon you would see on a bus tour but was still a fantastic experience).
Also there are a couple of outlets where you can go and get cheap clothes, you can almost make a day out of just going to these.
I can't wait to go back one day, will probably wait for a few years till they have finished the City Centre they were building next to the Bellagio.
i stayed in the Bellagio, while really good I think most of the other hotels looked as good. Thats something else to do, my wife would have happily watched the fountains for hours (they were good, watch in the evening with a nice cold bottle of beer).
Oh and had a quick round of 9 holes at the Callaway centre.
There is so much to do that anyone that says they are bored there must be mad
Only thing that annoyed me was the damn xxx card people and the people that keep bugging you asking if you want to see a show/free meal etc etc.