DO NOT BOOK through http://www.thevegasairportshuttle.com/ & paid $22 for roundtrip service to the Strip. They ended up booking me with Bell Trans who only charges $15!
My biggest complaint with Bell Trans is being notified that they pick up at The Palazzo on the half hour. Turns out that information is incorrect as the hotel has a dedicated shuttle with Bell Trans that departs on the hour. The driver told me this has been an ongoing issue for the past 6 months. Please update your information!!!