Rent a car? Do you not take advantage of the free-flowing drinks @ the casinos? Most tourists enjoy sampling the slushy, fruity concoctions many of which are uniquely Vegas (think Oatmeal Cookie Martinis at Peppermill.)
While I am not much of a drinker, I do find myself enjoying a free Tom Collins or two while I play, along with a frozen Pina Colada from one of the Slurpee-like vendors I happen by. I know I'm not alone indulging. Anyhoo, what I'm saying is that if you're one who likes to have a couple of drinks, please don't attempt to drive a car, period, much less in a town in which you don't know the roads well.
With the host of entertaining cab drivers at the ready, the monorail, the deuce and free shuttles, enjoy letting someone else do the navigation. After all, you're on vacation.

AK