I've already got the game.
My head start pre-order began Monday. Some more started Tuesday. Thursday is release. I got my box on the 17th, though the official release is the 18th.
The biggest complaint is that there's not enough player's heads to be throwing axes at in all the servers right now due to only pre-orders playing on a healthy amount of servers. Since official release hasn't quite happened yet, I imagine that problem will be solved soon.
At first I was all about the Public Quest system, then got sucked into the scenario queues (that can go extremely quickly with a full server), then did open RvR, then back to ... omg too much to do even with my guild grouped up.
Gotta say that the RvR/PvP is just plain fun, not a pain in the ass. The PvE content certainly isn't something that'll keep you grinding 60 mobs for 3 drops all the time. I'm surprised at how many people like grinding like that but.. I stray. It's no-hassle MMO with the fun thrown back in, finally.