I can't say enough good things about John Mull's! The food is exceptionally yummy, the prices are very fair for the quantity and quality of food, and even the atmosphere itself is a really nice departure from the ho-hum chain restaurants we're used to in Vegas.
Summertime can be a little uncomfortable since all the seating is outside, but over the past couple of years they've done a really good job of adding more shade to the seating areas.
If I would knock them for one thing it would be the wait. Since their food is so phenomenal, this place is very very busy, especially on the weekends... and they often only have 1 or 2 people serving up the orders. They could easily use 2 or 3 more people doing that, to keep us from having to wait so long for our food.
But I won't dock them a star for that. They still deserve 5 stars because by far, John Mull's is the BEST bbq in Vegas.