Good question, there are special arrangements for support and 24/7 on-call rotation (eg. if you have to work during the company break you get vacation days). It's also very easy to trade on-call days with colleagues, and other ad-hoc arrangements.

I'm not 100% certain this would work in a bigger company where people think of it as "just a job". But in a small team where everybody is passionate and eager to make it successful, it works great.

Thanks for the answer - I thought it would be something like this. Taking 2 weeks off during the holiday period is a great thing to do!

Not everyone works on products requiring 24/7 support. We also take a mandatory 1.5 week company break around the December holidays -- it's fantastic!