I will always love amphitheater-style venues. I don't know what it is about them, but the crowds just seem to be better and it's always good when the weather is favorable.
Coming from LA, there is definitely one huge perk that makes it 4-stars...FREEEEEE PARKING!!! Man, I'm just so used to paying $20 for parking at Staples Center and other venues, this actually blew my mind. If you have VIP tickets, make sure you park on the east side of the stadium (off 75th ave).
The only thing that sucks about this place is the price of the alcohol. I realize that its always a ripoff to buy booze at these places, but I thought Arizona would be a little better. It costs $9.50 for a 24-oz draft beer! That's just crazy. They also had these pre-made margarita drinks that were $14 each, plus an extra $5 if you wanted to get an extra shot in the drink. Word of advice, when you finish about half of your drink, release the extra shot from the tube or else you will have one shot to take at the very end. It's Sauza tequila and I don't care how drunk you are, that stuff tastes nasty by itself.