Walking is not only eco-friendly, but easy!
I recommend walking all the way! It's so much easier. Getting a hotel on the strip and taking a taxi only when necessary is so nice. The traffic on the strip gets insane, and unless you know the back ways around the area, it can literally take an hour to get from end of the strip to the other. While walking you can stop in different hotels along the way and experience the craziness that is Las Vegas. Taking taxis is so much easier than driving in a strange, busy city to me, but if you chose to drive, all of the hotels have free garages and parking is not a problem at all. Getting to the parking garages is a different story though!!!!