I love me some In-N-Out! Being a native Californian that's only been in LV for 3 years now, going to In-N-Out reminds me of home. The quality of their hamburgers are amazing and you can't beat their fresh cut fries. In my biased opinion, In-N-Out is the best fast food burger and fries by far.
This location, like every other I have been to, is well keep up, clean and has friendly, helpful staff.
Try it animal style if you haven't before.