Apparently there are a lot of restrictions, you're not allow to chat with other people, not allowed to join guilds, and etc.
edit: forgot the KMC censors posts, my stars are all the F-word in case anyone were wondering
Also, I got a 7 day free playtime when the Rage of the Firelands patch came out, and returned to WoW for that week. I must say that the questline itself was pretty darned good. However, they ****ed it all up by doing the worst thing ever in the history of WoW. To continue the questchain, after you had gotten to a certain point, you needed to gather 25 World Tree tokens, which you get 5 a day for doing daily quests. So now they are ****ing hiding questlines behind ****ing daily quests (which is imo the second worst thing in WoW, I absolutely abhor the idea of daily quests).
But 25 tokens, that would only take 5 days (3 actually because you start with 10), so that's no big deal right? But lo and behold, you then continue the questline to a new area, where you once again need to collect tokens, but this time it's two questlines, each needing 125 tokens each. At this point I told the game to **** off, and went to solo AQ for the remainder of my playtime.
If WoW continue with incorporating dailies into the questlines, I will never return.