I've been to the locations at Desert Ridge and Chandler and this was, by far, the best experience of them all.
We were there to celebrate my Mom's birthday and we weren't disappointed in the slightest. The food was its usual great self but the service stole the show. Very attentive staff on a Saturday night and our server, Leo, was a perfect 10/10. We have a 1-year old and he engaged him several times throughout the meal, including returning him to our table after he had snuck off:). We never had to wait or ask for anything.
We dine out quite a bit and I rarely write reviews so take this for what it's worth, you won't be disappointed in the slightest in choosing The Keg Tempe for your next nice meal and experience!