Translation of lässig

Writing large essays has never been my favorite task although it is one of the most important when learning a language. Spanish, English and German are all entirely supported by Vocabulix.
We begin to talk about 'we' and 'they', which makes us partly discriminating. As a whole, I guess that all of us have some predispositions, but the difference is, that some know how to supress it.
I called the Hilton hotel in Cuba and asked them whether it was worth coming or if they suggest to postpone the arrival. Their response was clear: Don't come unless you really have too.