Hey.
First of all. Thanks for offering this server. Seeing it having a huge population and barely any issues so far is very impressing. Anyway to the point.
Your activity on your Facebook were really good the first 24 hours. I would just recommend you to use this oppurtunity you have with your fans and really engage them. Keep people updated about the max lvled player on horde and alliance. First mount on the server and so on. You have players at work or at school just longing to get back home and play again you should really interact with them while they are not at home.
I know this is not your main concern at the moment but just putting it out there. People want updates and try to make em daily. With a healthy social media presence, a lot of players will stay with you in the long run and shows more a active side from you as well.