My guess is that the National experience is quite variable based on whether you're a member of their Emerald Club. If you are, you get to go straight to the appropriate row and grab your car. I'm a lucky person who is Emerald Executive, therefore I can just grab whatever car suits my fancy among those on the Executive row or the regular Emerald Club row. Generally speaking, this is a great thing as it gives a person a fair number of options while speeding up the getaway from the airport.\n\nI haven't ever had a bad experience renting from National at McCarran, however this time, my vehicle's windows and mirrors seemed to have been cleaned with a dirty towel so there was a lot of smearing. I didn't note this in the dark garage but it was noticeable in the sunlight and affected my visibility somewhat. Hence, what would have been a 5 star review becomes 4 stars. Yeah, seems like a little thing, but driver visibility is important to safety, so they deserve the knock down for this.