This has been my go to T-Mobile location since moving to Arizona. It is a "real" T-Mobile store unlike all the "T-Mobile Light" stores that have popped up over the last year. They aren't worth bothering with because they can't do many of the things that a "real" store can, they are pretty much just authorized resellers operating under the T-Mobile marquee.
I always seem to get waited on fairly promptly even when they are slammed and the staff is pretty good at multitasking.
They have provided in-store tech support on several occasions and got my phone warranty replacement underway in short order.