First and foremost, take advantage of their happy hour all day on Sundays.
After visiting two other breweries the same day, I have to admit that Sun Up was my favorite. Their beer sampler is definitely a good way to get started. It's served in a row of glasses slightly larger than shot glasses. You'll have to ignore the temptation to pound them one after the other... at least on your first go-round. All of their beers are certainly quality and quite enjoyable, though there didn't seem to be a huge "wow" factor with any of them. In no way will I hold that against them though, as none of the local AZ brews (that I've tried) seem to be doing anything very far outside of the box.
Not only should you visit Sun Up to check out their craft, you should definitely go to try their eats. Their wings are probably the best I have ever had; fried perfectly and still nice and moist, plus their "hot" sauce had a finely-tuned heat factor. Their sliders were dynamite as were the accompanying sweet potato fries and garlic parmesan fries.
The service was fast and very friendly, and the establishment (men's room included) was very well-kept. All I have left to add is: Way to go Sun Up!
See you next Sunday.