Do In-N-Out shops even need reviews? I think that if you can't appreciate a great burger in America from a self-made family business success story, you should check yourself for communist ties.
This burger chain has been around for decades and I have never been to one that does not have a crowd with lines at the counter and cars backed up at the drive through. Be persistent though and you will be rewarded with a quality, well put together burger that tops just about every other fast food burger chain out there.
This particular store has a separate merchandise shop and it is a fairly large property with more tables inside and out than a typical In-N-Out. There were also more parking spots and on the weekday afternoon I visited, the lines were manageable and my wait time from ordering to stuffing my pie hole was only about 10 minutes.
This location is close to The Strip so I imagine that there are times where the crowds and the wait are going to be terrible but the employees here seemed to be happy to be working and even came around a few times asking if they could get us anything else and clearing away our detritus and debris after the burger mauling that took place at our table. That kind of service I have not seen previously at other In-N-Outs so maybe they are trained to do that to keep people a bit happier while they have to wait. I did observe several locals that were very social with those of us visiting and they were all very proud of this particular location and they were really selling some foreign visitors on the food and the culture. Vegas should sign these people up as marketing ambassadors. I think by the end of the wait, the Japanese tourists patiently trying to hear their order number called were ready to denounce their own citizenship and move here based on the sales job from the local guy in line!
I'm sure the waits can be long here as they are at almost every other In-N-Out I have ever been to but the comforting reward of their burger in my hot little hand is worth it every time.