I've been to dozens of concerts here. Mostly Widespread Panic, and one great, wonderful No Doubt show.
It's an okay venue. Tailgating is allowed, which is always fun. Staff is fine and bathrooms are clean enough. Searches can be thorough or a joke - you can never tell. I've snuck in plenty of minibottles and had a bottle or two confiscated.
It's just that there is nothing particularly interesting about it. If you've been to Walnut Creek in Raleigh or N'Telos in Norfolk, you know exactly how it's laid out and how much the drinks cost (way, way too much). You know that you can smoke on the lawn but that you need to watch yourself in the seats. You know that you need to bring cash because the vendors don't accept them and the lines for the ATM are long and the charges super-high.
These venues are only good if you're seeing a good show. Otherwise, there is little to differentiate or recommend any particular pavilion. They're all professional and all boring. I'll come here again, but not because I like the Verizon Wireless Amphitheater.