Complete waste of time and money. If having to pay a decent amount of money to follow hordes of people, standing in huge line ups outside, and inside, very generic bars that anyone can get into, only to receive a watered down drink as your one freebie, and running to the next lame bar with the cattle call is your idea of VIP treatment, go for it.
If not, don't make the same mistake my wife and I did on our last evening in Vegas.
Put some effort into doing it on your own and you'll have a better time and money well spent. We went to some awesome places with quality food and drinks, and met some great people doing it on our own the previous night.
This organized 'tour' was a total ripoff and such a disappointing way to end our trip.