Dear SE, a suggestion for you for the future. Expect your entire playerbase to log on and attempt to do things at the same time for your next expansion launch. In preparation, do like you do with the Hall of the Novice instances, put in a queue. That way the servers are not overloaded, people are waiting, and people can EVENTUALLY get in. It may take hours for it to pop, but at least people can eventually get to them while doing FATEs, exploring new regions, and talking to other players. Also, please wait until AFTER the first dungeon to do so, that way people can also do the first dungeon to waste time and level their class if they do not wish to wait hours for a queue.