If I could give you one piece of advice on the eve of Cataclysm, it’s to have patience.
A great many things are going to happen over the upcoming days and weeks. They will be exciting, and fun, and you should take part in them.
But you should also remember that you have time.
A great many people will return to the game, or begin playing for the first time. There will be a lot of competition for resources, for position in the new guild society that is coming, for bragging rights.
Don’t let the expectations of others make you do things that aren’t fun for you. This is your play, not theirs. Take your time.
Enjoy the wonder of the new world. Don’t be in a rush to become jaded.
You have time to see it all.