I was not that interested in visiting Las Vegas, because it sounded like a overhyped place, but it turned out that they had cheap flights to Peru, so we decided to finish our roadtrip there.

We had a very tight itineray in the US, so we were quite tired by the time we got to Las Vegas, where we stayed for 3 nights, and took things very easy; chilled at the hotel, ate out and had drinks and walk down the Strip a couple of times.

I think Las Vegas ok, but not that big of a deal. Some casinos were fun with the different themes, but I found it very annoying that it was allowed to smoke inside everywhere. There were also a lot of walking up and down the stairs between the casinos, because there are no zebras to cross the road and none of the escalators were working. 

In my opinion one day is enough to see the Strip, where all the big casinos are. And if you are into gambling, partying and boobs, you can add a couple of more days.