There are 4.8k reviews as of today, but hell I'm adding mine too.
I can't go to Vegas without visiting this place. Every single sandwich I've tried (which is well over half their menu now) was just as delicious as the others. My personal favorite is their thanksgiving turkey one with cranberry and stuffing. I have noticed though that some days that particular sandwich will be soggier than others, but whatever, it's still extremely tasty.
Don't be fooled by their lines, this place usually has quick service.
If you're in vegas, go here. at least have one meal here. you won't regret it