Blizzard will probably patch so often in the first few weeks that I'll be 100 before honorbuddy is even working. Dungeons are my preferred method, but questing and pvp are options as well.
I am going to play by hand most likely for my first level 100, probably a mix of questing and dungeon farming. Fingers crossed as a tank the queue will be inta-pop and will make some good progress over the weekend.