Since Saturday when I first noticed it there has been only one Realm open at once in EU West, i.e. for at least 40 hours and over two server resets. Normally there is anything from two to half a dozen. When it’s busy it’s not unusual to see queues outside two or three. Even when the Realm is quiet there’s normally two, with two new ones created each reset, so when one closes after all quests done there’s another.
Of course the one there is has a queue all the time during the day. As I type 25 people are waiting to get in. It’s only not more as I’m sure a lot of people have realised and either found another server or found something else to do. EU West 2 e.g. does not have this problem.