Just made a new char to test getting into the Citadel, and without accepting any quests, when I double clicked on the box I got the following message, "You realize that your eyes are playing tricks on you. That crate isn't really shimmering." If you have ever turning in the Orders from Minax, then you have done one of the quests that allows you entrance into the Citadel.
I just don't want everyone to get ready and find out that a couple people can't enter because they didn't know they needed to have accepted or done a quest, and since ML's been out for almost 3 years now, some people might not remember if they can or can't enter the Citadel on the char they plan on taking.