Being from Hawaii, we don't have an In-N-Out Burger there, so it's a treat to have lunch/dinner here when visiting Vegas. The staff here is very friendly and know the meaning of customer service. I've never seen an employee not happy or friendly. The food is served freshly made with the appropriate temperature for the food. The only thing is that it gets rather crowded depending on the time of the day. But this is good as you know they're good and that items will always be fresh. Orders here are accurate and correct. I have yet to have an order that is wrong.
The fries are delicious as well as the burgers. I noticed that the fries are not as oily as other restaurants, and this is a good thing.
All in all, this location (next to UNLV) is great. I hope to visit other locations in Las Vegas as well.