I did not take any tours but I have used their Airport shuttle service last week.
PROS:
- walk right out the door from the United baggage claim terminal and they are there!
- super cheap. How can you beat $6 one way or $12 round trip from your hotel???
- very fast service, but then again, I went in February...is that an off-season?
- ON TIME, very prompt, to within + or - five minutes.
- drivers don't hassle you for tips, and in my book, they get more if thats the case :-)
CONS:
- none that I can think of, unless you don' t like stopping at other hotels to pick up other customers.
Forget the awful cabbies in Vegas (I can write a whole blog about the horror stories of terrible cabs), take a shuttle and it will save your pocketbook and sanity!