This was my second time at Earls, we arrived around lunch time. The line moves very quickly. We got a buzzer and seated ourselves while we waited for our food. The seating is limited but it's packed to go, so if you wanted to bring it elsewhere to eat it's doable.
It did not take more than 10 minutes to get our food. Their sandwiches are freshly made and were really delicious. I got the chipotle chicken sandwich. The chipotle sauce gives it a little kick, but makes it savory. I would definitely go back next time i'm in Vegas!