This is a double decker bus that runs up and down the strip 24/7. I visited during December and it was crowded on one trip and roomy on the way back. I spent $7 for a round trip ticket from my Hotel (Casino Royale) to Fremont Street (Old Town) I thought it was a nice effective way of getting to where I needed and you will get to meet your travelling neighbors when it gets busy. I am not sure I would use this during 90 degree plus weather. The idea of my face trapped in the armpit of oversized, overheated intoxicated passenger during the summer months might force me to take a taxi.