Terrible. We booked a stay in a hotel online, and on the reservation form online there was a box you could check to reserve a shuttle for an additional cost. I thought, why not? It'll be more convenient than taking a cab. Wrong. \n\nWhen we got to the airport, it was complete disarray. There were two shuttles, which I was first told were going to different places by the person in the ticket box, and then was told were going to the same places by a person on the street. The wait times quoted were long and wrong. I had to ask several staff members, both on the street and in the box, how long it would be and which shuttle we should be on. The responses trended toward unfriendly, and were largely unhelpful. Total wait was around 25 minutes for shuttle. \n\nWhen calling to book our return shuttle, they said they had to pick us up at 5:15 am (!) to get us to the airport in time for our 8:30 am flight, and that we shouldn't try calling the company to ask where our shuttle was unless it had been more than 15 minutes late (!). We could have quite literally walked to the airport quicker than that. And to top it off, when we called to cancel since we decided to sleep in another hour and a half and just take a cab, they didn't even have our reservation for the morning of our departure. No sign of it. NOW I understood why they allowed themselves several hours to screw things up and attempt to fix them in the morning. Things like this must happen all of the time. \n\nOur cab driver to the airport, I must say, was a gentleman, and the cost was less than the shuttle - and we left 15 minutes before we had to be there and arrived promptly! \n\nThe only upside to the Showtime shuttle was the driver we ended up with, who was helpful, hilarious, and very friendly. The first driver that was waiting at the curb certainly wasn't, so I'm glad I ended up with her otherwise I'd have been even more irked by my Showtime experience. \n\nTo sum: if you're only in Vegas for a short trip, like we were, save yourselves the time, money, and hassle and get a cab (or other alternative). Eek.