This airport is so-so.
One of the things that bothers me is how early you have to make your way to the airport if you want to be on time. Especially if you have a rental car to return. I find the time needed to get from your hotel/home in Vegas to through security and at your gate, is much more time than at other similar airports in other cities.
Gates can be somewhat far from check-in, or take a long time to get to after security. The rental car complex is FAR from the airport and adds at least 30-45 minutes to your trip to the airport. I can only imagine how many hungover tourists have missed their flights due to not factoring in the car rental return time. This is a pretty serious miscalculation on the part of an airport that is so especially focused on the tourist "what happens in Vegas..." crowd.
On my last visit, I put $5 in the slot machine at the gate for my departure (I don't usually gamble at all, but I was headed back to Canada and thought it would be as good a chance as any to get rid of my small US dollar bills...and hey luck is luck right?).. Well not exactly.. I put my $5 in, won $10..and.......drum roll.....the machine had a paper jam! The attendant just refused to give me my money back, instead calling a supervisor... whom I didn't see arrive because they were calling my name at the gate at this point and I had to scram or miss my flight (after all that extra planning to get there on time!!!)..
No need to reiterate that this kind of stuff is completely unacceptable at an airport like LAS