The signage for baggage claim at the airport is quite confusing. I personally ended up in the wrong terminal from the monorail and had to take an inter terminal shuttle (bus) to get back to the right one. Luckily my bags were still circling the carousel or I would not have been happy. I also came across 2 other passengers who did the same thing, so I know it wasn't just me.
Other than that the airport seemed fairly clean for what it is. There is always good people watching at the Vegas airport!