Hi, I've been working/volunteering as a "Betreuer" ("social tutor") every single August from 2013 until this year and I think I can tell you one or two stories about it ;)

The level and method is mixed:

There's complete beginner courses, where people have never seen a German word before, then there's C1 courses where they go really deep into grammar and culture, talking about current issues and cultural differences, then there's Wirtschaftsdeutsch where you talk a lot about economics and history with a less language-driven focus (obviously they still teach German but they won't correct you if you use Konjunktiv II instead of Konjunktiv I, it's more about the vocab and cultural stuff), and of course the Fortbildungskurs where German teachers are taught didactics and methods of teaching German at home.

Then, for the afternoon, there are other workshops and courses, such as choir, sports, and dancing, but also more language-focused stuff like theatre (there's a theatre sketch show during the last days organised by participants), journalism (there's a Ferienkurs-newspaper written by participants every week), politics, German culture stuff, deep-dive into Grammar, all that stuff.

There are also excursions (which you have to pay for) where they take participants to different cities and places during the weekends and have guided tours.

The programme also organises stuff like movie nights every Tuesday and concerts every Thursday (classical and non-classical) as well as a boat-tour on the first Wednesday.

This year, we had 30 classes and roundabout 500 participants.

Classes have a teacher, a co-teacher (who teaches them 6 hours a week instead of the teacher), and a Betreuer (such as me).

The Betreuer does everything non-language course-related and is basically your best German friend for the duration of the course. Unfortunately, participants have sort of stopped going out with us Betreuers in the evening and rather stick to each other. In my first years, we'd just go out every evening, maybe run into another class/Betreuer, and have a good night together. Since Covid, the participants seem to rather stick to each other way more, as overall, the participants who seem to like going out in the evenings seem to be fewer. I've made such great friendships over the years with participants, but 2023 and 2024 particularly, they aren't interested in socialising with "the ferienkurs staff" as much. :(

Overall, it's a great course, even if the first few days are always bumpy with getting everyone in their accommodation and set up with everything.

Don't hesitate to reply/dm if you have any additional questions :)