Unable to answer "What are the opening hours here?" – Bruichladdich Hall (Town Hall) – https://osm.org/way/851279616 via StreetComplete 57.4:

This is the village community hall, not a town hall. No regular opening hours, used for markets, concerts, receptions etc.

Attached photo(s):
https://westnordost.de/p/212539.jpg
https://westnordost.de/p/212540.jpg
https://westnordost.de/p/212541.jpg