Used CLS from McCarron to the Strip. Satisfactory and would use them again. Price comparable if not a buck or two cheaper than the other shuttle services. Wait was less than ten minutes to fill up the van with more passengers. Cleanly. Driver kept the A/C On and the door closed. Friendly driver. We had a Latino gentleman. About tipping - there is signage regarding tipping but in Vegas, the industry is based on tipping. That's how most folks make their living there. If the service is satisfactory, if affordable, it won't hurt to be generous. If the service is totally bad, then don't tip. Don't be a tightwade.