If Zurich is like most other European cities, I'm sure most shops will be closed on holidays.
Haven't been there yet, though, so can't help with the rest of the query 
The numbers don't decide, the system is a lie. The river running dry, the wings of butterflies.
And you may pour us away like soup. Like we're pretty broken flowers.
We'll take back what is ours. One day at a time.