It can be downright dangerous on those crowded sidewalks...one nudge and you're in the path of a bus.
A few years ago, wifey and I walked the strip from the Frontier all the way to Mandalay - beginning around 9am....the plan was to take a taxi back, but seeing how crowded Las Vegas Blvd was, we just crossed the street and casino hopped all the way back - we could track recognizable vehicles, and made better time (except for the breaks we'd take inside) than the traffic.
When driving around the strip, use Paradise to the West and Industrial/Dean Martin to the east. Makes things a lot faster.
When driving around the strip, use Paradise to the EAST and Industrial/Dean Martin to the WEST. Sorry!