We love this tour. We do it almost every time we visit Vegas. We always have a Groupon making it around $21 for a day tour. Sure, we love the sights but it's cheap transportation. We go up and down the strip, to downtown, stop at Slots A Fun, back to Excalibur, etc. It saves you a TON in cab care and you don't have to walk 5 miles to each monorail station. Of course it's frustrating because they drive the strip and traffic is bad. They are often late. But what do you expect? You see how cars drive. It's congested. I don't blame them for being late. They deserve gratuity. Don't be a jerk and tip them. In the summer, they gave us cold bottles of water at the Circus Circus stop. Free. They were all nice. We will do it again.