I took a group of 14 friends to P3 for my birthday - before they were officially open for business - and we had a really fun time! The fact that they opened early was indicative of their service orientation, which also made itself evident via prompt replies to my calls and emails, and perhaps more importantly the fact that they bought us pizza!
While the location has some work to do before they are fully up and running, we were impressed by the fields that were already finished: one wooded and another in more of an open field environment. They have others in the works, which will make them a well-rounded site for a variety of scenario-based games. Their equipment is also good. It's brand new and my little brother in particular was enamored with the kick-butt look he had after donning a mask and wielding a gun. They even had protective vests and gloves available to rent for our more timid participants (many of us were new to paintball).
The staff asked us for feedback following our play. We only had a few small suggestions for improvement, all of which they have plans for addressing prior to the full launch of the site. We look forward to returning when they are fully operational!