I arrived in Vegas by myself and I didn't want to waste money on a taxi. I paid $6 and got a one-way token for the Executive shuttle. I was the first one on the bus and I was a little worried. You know when you're on a shuttle and you wait a looooong time for enough other passengers to get on so the shuttle can finally leave? I didn't have that problem here. Within 10 minutes, the shuttle was full and we were on our way. Luckily for me, I was the first to get dropped off. All in all, it was cheap and efficient.
However, if you have 3 people, you're probably better off taking a taxi. The cost is about the same and you can save some extra time.