Yeah I think German culture is quite serious when it comes to work, however, the working hours are not a lot. People usually work about 40 hours per week, so 8 hours per day :)
Drinking is a kind of important part of German culture. They drink often to socialize with other people, for example amongst coworkers or students. I personally dont drink at all (I have never tried it), but there are a lot of people who dont drink too :) So there is always company. Both of my closest 2 friends dont drink 555.
I just saw that you like Cro! And Kwabs too haha.. I like your taste in music!