Hop onto the carousel in the darkmoon faire and get the WHEE!(WHEE! - Spell - World of Warcraft) buff 1 hour. Then port to org and go to the dark portal and log-out until wod release.
The buff stays when you logout at 1 hour. Meaning you can get the 1 hour buff for the starting zones and get to gorgond faster to get ahead of the pack of people. I don't know if it will disappear after the darkmoon.
The last day of darkmoon is next sunday so you only have to logout for monday, tuesday, wedsnday for the character you want to level with.