I've been using this trick since closed beta and it works 100% of the time. Die on any continent that has a boat or a zeppelin on it. Don't release. Ride the zeppelin or boat over to the other continent. You are now free to rez at ANY graveyard you want to, including opposing faction's just outside major cities. I use this as a level 1 human all the time. Die at Northshire, ghost run to Grom'gol and take the zepp over to Orgrimmar, rez just outside Org.
There was another similar post but they tried making this way more complicated than it actually is.
My suggestion, get all your guildmates to roll level 1s (Orc, Troll, or Human) and use this trick to go to either Stormwind or Orgrimmar and stand just outside the front door having a dance fest or a duel fest.