I had fun this weekend with the head start. Aside from overflow and party frustrations I think the launch is going well so far.
I've got 2 characters up to around level 11 and I had some fun with my guild mates adventuring into dangerously high level areas
my main guy is a Norn Ranger (rides again!
) and I also have a Human Guardian. I haven't seriously tried the other professions, but so far the one's I've tried are really fun to play.