I have been here a handful of times now and I like it (EXCEPT for the service). The patio is a nice spot to grab a drink and enjoy the stars and valley's twinkling lights. I'm not sure if entertainment is weekends only, but one night when we were there it was a solo guy singing 70s/80s/90s tunes and playing guitar -- pretty good.
They have a decent selection of wines. The kobe burger and filet quesadillas are delicious! This is seriously one of the best burgers I have ever eaten - YUM. Yes, it takes a while for the burger to cook but it is made to order. If you want a quick, pre-made patty head down the road to one of the fast food joints.
On each visit the service has been unsatisfactory. I hope the owner does more to promote the place as it is not easy to find (typical of FH, no large street sign) and I think there is great potential to make this place a Fountain Hills hot spot with just a few improvements to to service issues.