What I like about Kelly's is that it isn't a "college bar" like you'll find down the street in Old Town or on Mill. It's very classy, with a great patio and a decent wine list. At night it get busy and feels like a regular bar, but during the day it has a nice chill atmosphere.
What I dislike is the same I dislike about most Scottsdale venues; both patrons and the servers tend to think highly of themselves. Everything is priced a little higher. These aren't deal-breakers, but it's not something I go for if I can help it.
Last time I was here was a gorgeous Sunday afternoon, and our large group was offered a couch on the patio. The ambiance and weather were perfect. The server got us excited about half-priced bottles of wine (or champagne) and we ordered some. It was quite lovely to sit back with good conversation and sip a nice merlot in the 75 degree sunshine. I'm pretty sure we made it clear we weren't eating, but she kept asking if we were ready to order food. When we asked for the bill, we realized the reason for her persistence was the fact that the half-priced bottles was only available with a food order. Interesting tid-bit she left out at the beginning there. We got a quick side of fries to solve that problem.
I would be unlikely to choose Kelly's if it were up to me, but I'll tag along if I'm invited. I have no major complaints, it just doesn't quite seem worth the price (if you miss one of the specials or fail to order food).